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From qiang...@apache.org
Subject [carbondata] branch master updated: [CARBONDATA-3503][Carbon2] Adapt to SparkSessionExtension
Date Thu, 09 Jan 2020 12:55:03 GMT
This is an automated email from the ASF dual-hosted git repository.

qiangcai pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/carbondata.git


The following commit(s) were added to refs/heads/master by this push:
     new 1259496  [CARBONDATA-3503][Carbon2] Adapt to SparkSessionExtension
1259496 is described below

commit 125949624b0e6a524e6ed052aae215cbe0110a25
Author: Ajith <ajith2489@gmail.com>
AuthorDate: Tue Sep 17 11:23:19 2019 +0530

    [CARBONDATA-3503][Carbon2] Adapt to SparkSessionExtension
    
    1. Use SparkSessionExtensions
    2. Drop CarbonSessionCatalog and instead make it a utility by passing sparkSession as CarbonSessionCatalog
    3. SessionCatalog.lookupRelation do not provide across spark context synchronization
    4. Limitation: not support MV datamap
    
    This closes #3393
---
 .../carbondata/mv/datamap/MVDataMapProvider.scala  |   6 +-
 .../carbondata/mv/rewrite/MVCoalesceTestCase.scala |   4 +-
 .../mv/rewrite/MVCountAndCaseTestCase.scala        |   4 +-
 .../carbondata/mv/rewrite/MVCreateTestCase.scala   |   4 +-
 .../mv/rewrite/MVExceptionTestCase.scala           |   4 +-
 .../mv/rewrite/MVFilterAndJoinTest.scala           |   4 +-
 .../mv/rewrite/MVIncrementalLoadingTestcase.scala  |   5 +-
 .../carbondata/mv/rewrite/MVInvalidTestCase.scala  |   4 +-
 .../mv/rewrite/MVMultiJoinTestCase.scala           |   4 +-
 .../carbondata/mv/rewrite/MVRewriteTestCase.scala  |   4 +-
 .../carbondata/mv/rewrite/MVSampleTestCase.scala   |   4 +-
 .../carbondata/mv/rewrite/MVTPCDSTestCase.scala    |   4 +-
 .../carbondata/mv/rewrite/MVTpchTestCase.scala     |   4 +-
 .../mv/rewrite/SelectAllColumnsSuite.scala         |   4 +-
 .../mv/rewrite/TestAllOperationsOnMV.scala         |   4 +-
 .../mv/rewrite/TestPartitionWithMV.scala           |   4 +-
 .../carbondata/mv/rewrite/TestSQLSuite.scala       |   4 +-
 .../carbondata/mv/rewrite/Tpcds_1_4_Suite.scala    |   4 +-
 .../TestMVTimeSeriesCreateDataMapCommand.scala     |   4 +-
 .../carbondata/mv/testutil/ModularPlanTest.scala   |   4 +-
 .../carbondata/mv/plans/ModularToSQLSuite.scala    |   4 +-
 .../carbondata/mv/plans/SignatureSuite.scala       |   4 +-
 .../examples/sql/JavaCarbonSessionExample.java     |  11 +-
 .../benchmark/ConcurrentQueryBenchmark.scala       |  11 +-
 .../benchmark/SimpleQueryBenchmark.scala           |   9 +-
 .../apache/carbondata/examples/HiveExample.scala   |   1 -
 .../apache/carbondata/examples/S3CsvExample.scala  |  12 +-
 .../org/apache/carbondata/examples/S3Example.scala |   9 +-
 .../carbondata/examples/S3UsingSDkExample.scala    |   9 +-
 .../carbondata/examples/util/ExampleUtils.scala    |   9 +-
 .../apache/carbondata/examplesCI/RunExamples.scala |   7 +
 .../pom.xml                                        |  15 +-
 .../testsuite/datamap/CGDataMapTestCase.scala      |   4 +-
 .../testsuite/datamap/DataMapWriterSuite.scala     |   4 +-
 .../testsuite/datamap/FGDataMapTestCase.scala      |   4 +-
 .../testsuite/datamap/TestDataMapCommand.scala     |   4 +-
 .../testsuite/datamap/TestDataMapStatus.scala      |   4 +-
 .../iud/TestInsertAndOtherCommandConcurrent.scala  |   0
 .../spark/util/CarbonSparkQueryTest.scala          |  50 ++++
 .../sql/commands/TestCarbonDropCacheCommand.scala  |   7 +-
 .../sql/commands/TestCarbonShowCacheCommand.scala  |   0
 .../apache/spark/sql/profiler/ProfilerSuite.scala  |   6 +-
 integration/spark-common-test/pom.xml              |  12 +
 .../testsuite/dataload/TestLoadDataGeneral.scala   |   5 +-
 .../TestAlterTableSortColumnsProperty.scala        |   1 -
 .../compaction/TestHybridCompaction.scala          |   1 -
 .../TestCreateHiveTableWithCarbonDS.scala          |   8 +-
 .../testsuite/dataload/TestLoadDataFrame.scala     |   1 +
 .../StandardPartitionTableQueryTestCase.scala      |   2 +-
 .../apache/spark/sql/test/TestQueryExecutor.scala  |   9 +-
 .../spark/sql/test/util/CarbonQueryTest.scala      | 212 +++++++++++++++
 .../apache/spark/util/CarbonReflectionUtils.scala  |  14 +-
 .../sql/hive/CarbonInMemorySessionState.scala      | 298 ---------------------
 .../spark/sql/hive/CarbonOptimizerUtil.scala       |   2 +-
 .../apache/spark/sql/hive/CarbonSessionState.scala | 223 +++++----------
 .../carbondata/indexserver/IndexServer.scala       |   8 +-
 .../spark/thriftserver/CarbonThriftServer.scala    |  12 +-
 .../apache/carbondata/store/SparkCarbonStore.scala |   5 +-
 .../spark/sql/CarbonDatasourceHadoopRelation.scala |   4 +-
 .../scala/org/apache/spark/sql/CarbonEnv.scala     |   7 +-
 .../org/apache/spark/sql/CarbonExtensions.scala    |  99 +++++++
 .../scala/org/apache/spark/sql/CarbonSession.scala |  85 ++----
 .../scala/org/apache/spark/sql/CarbonSource.scala  |  10 +-
 .../scala/org/apache/spark/sql/CarbonUtils.scala   | 120 +++++++++
 .../CarbonAlterTableCompactionCommand.scala        |   4 +-
 .../CarbonInsertIntoHadoopFsRelationCommand.scala  | 282 +++++++++++++++++++
 .../command/management/CarbonLoadDataCommand.scala |   4 +-
 .../schema/CarbonAlterTableAddColumnCommand.scala  |   5 +-
 ...nAlterTableColRenameDataTypeChangeCommand.scala |   9 +-
 .../schema/CarbonAlterTableDropColumnCommand.scala |   6 +-
 .../schema/CarbonAlterTableRenameCommand.scala     |  10 +-
 .../schema/CarbonAlterTableSetCommand.scala        |   4 +-
 .../schema/CarbonAlterTableUnsetCommand.scala      |   3 +-
 .../spark/sql/execution/strategy/DDLStrategy.scala |  17 +-
 .../spark/sql/hive/CarbonHiveMetaStore.scala       |   7 +-
 .../spark/sql/hive/CarbonSessionCatalog.scala      | 135 ----------
 .../spark/sql/hive/cli/CarbonSQLCLIDriver.scala    |  11 +-
 .../apache/spark/sql/optimizer/CarbonFilters.scala |  14 +-
 .../spark/sql/optimizer/CarbonLateDecodeRule.scala |   2 +-
 .../spark/sql/parser/CarbonSparkSqlParser.scala    |   4 +-
 ...r.scala => CarbonSpark2TestQueryExecutor.scala} |  22 +-
 .../spark/sql/test/Spark2TestQueryExecutor.scala   |  10 +-
 .../org/apache/spark/util/AlterTableUtil.scala     |   7 +-
 .../apache/spark/sql/hive/CarbonOptimizer.scala    |   2 +-
 ...apache.spark.sql.test.TestQueryExecutorRegister |   3 +-
 .../bloom/BloomCoarseGrainDataMapSuite.scala       |   4 +-
 .../TestSegmentReadingForMultiThreading.scala      |  14 +-
 .../bucketing/TableBucketingTestCase.scala         |   6 +-
 .../apache/spark/sql/CarbonExtensionSuite.scala    |  37 +++
 .../spark/sql/common/util/Spark2QueryTest.scala    |  11 +-
 pom.xml                                            |   1 +
 91 files changed, 1185 insertions(+), 854 deletions(-)

diff --git a/datamap/mv/core/src/main/scala/org/apache/carbondata/mv/datamap/MVDataMapProvider.scala b/datamap/mv/core/src/main/scala/org/apache/carbondata/mv/datamap/MVDataMapProvider.scala
index 2c2ad1e..2550edc 100644
--- a/datamap/mv/core/src/main/scala/org/apache/carbondata/mv/datamap/MVDataMapProvider.scala
+++ b/datamap/mv/core/src/main/scala/org/apache/carbondata/mv/datamap/MVDataMapProvider.scala
@@ -20,7 +20,7 @@ import java.io.IOException
 
 import scala.collection.JavaConverters._
 
-import org.apache.spark.sql.{CarbonEnv, CarbonSession, SparkSession}
+import org.apache.spark.sql.{CarbonEnv, CarbonUtils, SparkSession}
 import org.apache.spark.sql.catalyst.TableIdentifier
 import org.apache.spark.sql.catalyst.plans.logical.SubqueryAlias
 import org.apache.spark.sql.execution.command.management.CarbonLoadDataCommand
@@ -189,7 +189,7 @@ class MVDataMapProvider(
    */
   private def setSegmentsToLoadDataMap(tableUniqueName: String,
       mainTableSegmentList: java.util.List[String]): Unit = {
-    CarbonSession
+    CarbonUtils
       .threadSet(CarbonCommonConstants.CARBON_INPUT_SEGMENTS +
                  tableUniqueName, mainTableSegmentList.asScala.mkString(","))
   }
@@ -197,7 +197,7 @@ class MVDataMapProvider(
   private def unsetMainTableSegments(): Unit = {
     val relationIdentifiers = dataMapSchema.getParentTables.asScala
     for (relationIdentifier <- relationIdentifiers) {
-      CarbonSession
+      CarbonUtils
         .threadUnset(CarbonCommonConstants.CARBON_INPUT_SEGMENTS +
                      relationIdentifier.getDatabaseName + "." +
                      relationIdentifier.getTableName)
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVCoalesceTestCase.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVCoalesceTestCase.scala
index 255887d..5310cc8 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVCoalesceTestCase.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVCoalesceTestCase.scala
@@ -19,10 +19,10 @@ package org.apache.carbondata.mv.rewrite
 import org.apache.spark.sql.Row
 import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
 import org.apache.spark.sql.execution.datasources.LogicalRelation
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
-class MVCoalesceTestCase  extends QueryTest with BeforeAndAfterAll  {
+class MVCoalesceTestCase  extends CarbonQueryTest with BeforeAndAfterAll  {
   override def beforeAll(): Unit = {
     drop()
     sql("create table coalesce_test_main(id int,name string,height int,weight int) " +
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVCountAndCaseTestCase.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVCountAndCaseTestCase.scala
index f4b7679..2c13a6e 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVCountAndCaseTestCase.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVCountAndCaseTestCase.scala
@@ -18,10 +18,10 @@ package org.apache.carbondata.mv.rewrite
 
 import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
 import org.apache.spark.sql.execution.datasources.LogicalRelation
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
-class MVCountAndCaseTestCase  extends QueryTest with BeforeAndAfterAll{
+class MVCountAndCaseTestCase  extends CarbonQueryTest with BeforeAndAfterAll{
 
 
   override def beforeAll(): Unit = {
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVCreateTestCase.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVCreateTestCase.scala
index 8972068..032d8dd 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVCreateTestCase.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVCreateTestCase.scala
@@ -20,7 +20,7 @@ import java.io.File
 import java.nio.file.{Files, Paths}
 
 import org.apache.spark.sql.{CarbonEnv, Row}
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
 import org.apache.carbondata.common.exceptions.sql.MalformedCarbonCommandException
@@ -30,7 +30,7 @@ import org.apache.carbondata.core.util.CarbonProperties
 import org.apache.carbondata.core.util.path.CarbonTablePath
 import org.apache.carbondata.spark.exception.ProcessMetaDataException
 
-class MVCreateTestCase extends QueryTest with BeforeAndAfterAll {
+class MVCreateTestCase extends CarbonQueryTest with BeforeAndAfterAll {
 
   override def beforeAll {
     drop()
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVExceptionTestCase.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVExceptionTestCase.scala
index b2e6376..397296d 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVExceptionTestCase.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVExceptionTestCase.scala
@@ -18,10 +18,10 @@ package org.apache.carbondata.mv.rewrite
 
 import org.apache.carbondata.common.exceptions.sql.{MalformedCarbonCommandException, MalformedDataMapCommandException}
 import org.apache.spark.sql.catalyst.analysis.NoSuchTableException
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
-class MVExceptionTestCase  extends QueryTest with BeforeAndAfterAll {
+class MVExceptionTestCase  extends CarbonQueryTest with BeforeAndAfterAll {
   override def beforeAll: Unit = {
     drop()
     sql("create table main_table (name string,age int,height int) stored by 'carbondata'")
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVFilterAndJoinTest.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVFilterAndJoinTest.scala
index 0f1301c..e7a6acc 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVFilterAndJoinTest.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVFilterAndJoinTest.scala
@@ -17,10 +17,10 @@
 package org.apache.carbondata.mv.rewrite
 
 import org.apache.spark.sql.Row
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
-class MVFilterAndJoinTest extends QueryTest with BeforeAndAfterAll {
+class MVFilterAndJoinTest extends CarbonQueryTest with BeforeAndAfterAll {
 
   override def beforeAll(): Unit = {
     drop
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVIncrementalLoadingTestcase.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVIncrementalLoadingTestcase.scala
index 32b0567..6daaf4b 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVIncrementalLoadingTestcase.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVIncrementalLoadingTestcase.scala
@@ -20,7 +20,7 @@ package org.apache.carbondata.mv.rewrite
 import org.apache.spark.sql.Row
 import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
 import org.apache.spark.sql.execution.datasources.LogicalRelation
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
 import org.apache.carbondata.core.constants.CarbonCommonConstants
@@ -33,7 +33,7 @@ import org.apache.carbondata.core.statusmanager.{SegmentStatus, SegmentStatusMan
  * Test Class to verify Incremental Load on  MV Datamap
  */
 
-class MVIncrementalLoadingTestcase extends QueryTest with BeforeAndAfterAll {
+class MVIncrementalLoadingTestcase extends CarbonQueryTest with BeforeAndAfterAll {
 
   override def beforeAll(): Unit = {
     sql("drop table IF EXISTS test_table")
@@ -44,6 +44,7 @@ class MVIncrementalLoadingTestcase extends QueryTest with BeforeAndAfterAll {
     sql("drop table if exists sales")
     sql("drop table if exists products1")
     sql("drop table if exists sales1")
+    sql("drop datamap if exists datamap1")
   }
 
   test("test Incremental Loading on rebuild MV Datamap") {
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVInvalidTestCase.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVInvalidTestCase.scala
index cd57564..aad3f89 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVInvalidTestCase.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVInvalidTestCase.scala
@@ -16,10 +16,10 @@
  */
 package org.apache.carbondata.mv.rewrite
 
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
-class MVInvalidTestCase  extends QueryTest with BeforeAndAfterAll {
+class MVInvalidTestCase  extends CarbonQueryTest with BeforeAndAfterAll {
 
   override def beforeAll(): Unit = {
     drop
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVMultiJoinTestCase.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVMultiJoinTestCase.scala
index 19bc343..79a6a1c 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVMultiJoinTestCase.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVMultiJoinTestCase.scala
@@ -19,10 +19,10 @@ package org.apache.carbondata.mv.rewrite
 import org.apache.spark.sql.Row
 import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
 import org.apache.spark.sql.execution.datasources.LogicalRelation
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
-class MVMultiJoinTestCase extends QueryTest with BeforeAndAfterAll {
+class MVMultiJoinTestCase extends CarbonQueryTest with BeforeAndAfterAll {
 
   override def beforeAll(){
     drop
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVRewriteTestCase.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVRewriteTestCase.scala
index 9b7727b..5999bbc 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVRewriteTestCase.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVRewriteTestCase.scala
@@ -18,10 +18,10 @@ package org.apache.carbondata.mv.rewrite
 
 import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
 import org.apache.spark.sql.execution.datasources.LogicalRelation
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
-class MVRewriteTestCase extends QueryTest with BeforeAndAfterAll {
+class MVRewriteTestCase extends CarbonQueryTest with BeforeAndAfterAll {
 
 
   override def beforeAll(): Unit = {
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVSampleTestCase.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVSampleTestCase.scala
index 892e23f..5922750 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVSampleTestCase.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVSampleTestCase.scala
@@ -20,14 +20,14 @@ import java.io.File
 
 import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
 import org.apache.spark.sql.execution.datasources.LogicalRelation
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
 import org.apache.carbondata.core.constants.CarbonCommonConstants
 import org.apache.carbondata.core.util.CarbonProperties
 import org.apache.carbondata.mv.rewrite.matching.TestSQLBatch._
 
-class MVSampleTestCase extends QueryTest with BeforeAndAfterAll {
+class MVSampleTestCase extends CarbonQueryTest with BeforeAndAfterAll {
 
   override def beforeAll {
     drop()
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVTPCDSTestCase.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVTPCDSTestCase.scala
index 3a6b17e..1963e9b 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVTPCDSTestCase.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVTPCDSTestCase.scala
@@ -20,7 +20,7 @@ import java.io.File
 
 import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
 import org.apache.spark.sql.execution.datasources.LogicalRelation
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
 import org.apache.carbondata.core.constants.CarbonCommonConstants
@@ -28,7 +28,7 @@ import org.apache.carbondata.core.util.CarbonProperties
 import org.apache.carbondata.mv.rewrite.matching.TestTPCDS_1_4_Batch._
 import org.apache.carbondata.mv.testutil.Tpcds_1_4_Tables.tpcds1_4Tables
 
-class MVTPCDSTestCase extends QueryTest with BeforeAndAfterAll {
+class MVTPCDSTestCase extends CarbonQueryTest with BeforeAndAfterAll {
 
   override def beforeAll {
     drop()
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVTpchTestCase.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVTpchTestCase.scala
index d17881a..a8dfeca 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVTpchTestCase.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/MVTpchTestCase.scala
@@ -21,13 +21,13 @@ import java.io.File
 import org.apache.spark.sql.catalyst.expressions.aggregate.AggregateExpression
 import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
 import org.apache.spark.sql.execution.datasources.LogicalRelation
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
 import org.apache.carbondata.core.constants.CarbonCommonConstants
 import org.apache.carbondata.core.util.CarbonProperties
 
-class MVTpchTestCase extends QueryTest with BeforeAndAfterAll {
+class MVTpchTestCase extends CarbonQueryTest with BeforeAndAfterAll {
 
   override def beforeAll {
     drop()
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/SelectAllColumnsSuite.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/SelectAllColumnsSuite.scala
index 8120dbf..5344939 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/SelectAllColumnsSuite.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/SelectAllColumnsSuite.scala
@@ -19,9 +19,9 @@ package org.apache.carbondata.mv.rewrite
 import org.apache.spark.sql.Row
 import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
 import org.apache.spark.sql.execution.datasources.LogicalRelation
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 
-class SelectAllColumnsSuite extends QueryTest {
+class SelectAllColumnsSuite extends CarbonQueryTest {
 
   test ("table select all columns mv") {
     sql("drop datamap if exists all_table_mv")
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/TestAllOperationsOnMV.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/TestAllOperationsOnMV.scala
index 7ca5b12..3c0ced0 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/TestAllOperationsOnMV.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/TestAllOperationsOnMV.scala
@@ -22,7 +22,7 @@ import java.util
 
 import org.apache.spark.sql.{AnalysisException, CarbonEnv, Row}
 import org.apache.spark.sql.catalyst.TableIdentifier
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterEach
 
 import org.apache.carbondata.common.exceptions.sql.MalformedCarbonCommandException
@@ -34,7 +34,7 @@ import org.apache.carbondata.spark.exception.ProcessMetaDataException
 /**
  * Test Class for MV Datamap to verify all scenerios
  */
-class TestAllOperationsOnMV extends QueryTest with BeforeAndAfterEach {
+class TestAllOperationsOnMV extends CarbonQueryTest with BeforeAndAfterEach {
 
   override def beforeEach(): Unit = {
     sql("drop table IF EXISTS maintable")
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/TestPartitionWithMV.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/TestPartitionWithMV.scala
index 0d5b645..08cfdaf 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/TestPartitionWithMV.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/TestPartitionWithMV.scala
@@ -21,7 +21,7 @@ import scala.collection.JavaConverters._
 
 import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
 import org.apache.spark.sql.execution.datasources.LogicalRelation
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.apache.spark.sql.{CarbonEnv, Row}
 import org.scalatest.BeforeAndAfterAll
 
@@ -30,7 +30,7 @@ import org.apache.carbondata.core.datastore.impl.FileFactory
 /**
  * Test class for MV to verify partition scenarios
  */
-class TestPartitionWithMV extends QueryTest with BeforeAndAfterAll {
+class TestPartitionWithMV extends CarbonQueryTest with BeforeAndAfterAll {
 
   val testData = s"$resourcesPath/sample.csv"
 
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/TestSQLSuite.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/TestSQLSuite.scala
index 95450b2..bc38adf 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/TestSQLSuite.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/TestSQLSuite.scala
@@ -18,7 +18,7 @@
 package org.apache.carbondata.mv.rewrite
 
 import org.apache.spark.sql.catalyst.util._
-import org.apache.spark.sql.hive.CarbonSessionCatalog
+import org.apache.spark.sql.hive.CarbonSessionCatalogUtil
 import org.scalatest.BeforeAndAfter
 import org.apache.carbondata.mv.testutil.ModularPlanTest
 import org.apache.spark.sql.util.SparkSQLUtil
@@ -28,7 +28,7 @@ class TestSQLSuite extends ModularPlanTest with BeforeAndAfter {
 
   val spark = sqlContext
   val testHive = sqlContext.sparkSession
-  val hiveClient = SparkSQLUtil.sessionState(spark.sparkSession).catalog.asInstanceOf[CarbonSessionCatalog].getClient()
+  val hiveClient = CarbonSessionCatalogUtil.getClient(spark.sparkSession)
   
   ignore("protypical mqo rewrite test") {
     
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/Tpcds_1_4_Suite.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/Tpcds_1_4_Suite.scala
index b30a131..3d5f168 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/Tpcds_1_4_Suite.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/rewrite/Tpcds_1_4_Suite.scala
@@ -18,7 +18,7 @@
 package org.apache.carbondata.mv.rewrite
 
 import org.apache.spark.sql.catalyst.util._
-import org.apache.spark.sql.hive.CarbonSessionCatalog
+import org.apache.spark.sql.hive.CarbonSessionCatalogUtil
 import org.scalatest.BeforeAndAfter
 import org.apache.carbondata.mv.testutil.ModularPlanTest
 import org.apache.spark.sql.util.SparkSQLUtil
@@ -31,7 +31,7 @@ class Tpcds_1_4_Suite extends ModularPlanTest with BeforeAndAfter {
 
   val spark = sqlContext
   val testHive = sqlContext.sparkSession
-  val hiveClient = SparkSQLUtil.sessionState(spark.sparkSession).catalog.asInstanceOf[CarbonSessionCatalog].getClient()
+  val hiveClient = CarbonSessionCatalogUtil.getClient(spark.sparkSession)
 
   test("test using tpc-ds queries") {
 
diff --git a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/timeseries/TestMVTimeSeriesCreateDataMapCommand.scala b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/timeseries/TestMVTimeSeriesCreateDataMapCommand.scala
index 699b189..8cf94de 100644
--- a/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/timeseries/TestMVTimeSeriesCreateDataMapCommand.scala
+++ b/datamap/mv/core/src/test/scala/org/apache/carbondata/mv/timeseries/TestMVTimeSeriesCreateDataMapCommand.scala
@@ -19,7 +19,7 @@ package org.apache.carbondata.mv.timeseries
 
 import java.util.concurrent.{Callable, Executors, TimeUnit}
 
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
 import org.apache.carbondata.common.exceptions.sql.MalformedCarbonCommandException
@@ -27,7 +27,7 @@ import org.apache.carbondata.core.constants.CarbonCommonConstants
 import org.apache.carbondata.core.util.CarbonProperties
 import org.apache.carbondata.mv.rewrite.TestUtil
 
-class TestMVTimeSeriesCreateDataMapCommand extends QueryTest with BeforeAndAfterAll {
+class TestMVTimeSeriesCreateDataMapCommand extends CarbonQueryTest with BeforeAndAfterAll {
 
   private val timestampFormat = CarbonProperties.getInstance()
     .getProperty(CarbonCommonConstants.CARBON_TIMESTAMP_FORMAT)
diff --git a/datamap/mv/plan/src/main/scala/org/apache/carbondata/mv/testutil/ModularPlanTest.scala b/datamap/mv/plan/src/main/scala/org/apache/carbondata/mv/testutil/ModularPlanTest.scala
index 9d4735c..6ac22e7 100644
--- a/datamap/mv/plan/src/main/scala/org/apache/carbondata/mv/testutil/ModularPlanTest.scala
+++ b/datamap/mv/plan/src/main/scala/org/apache/carbondata/mv/testutil/ModularPlanTest.scala
@@ -21,7 +21,7 @@ import org.apache.spark.sql.catalyst.expressions._
 import org.apache.spark.sql.catalyst.expressions.aggregate.AggregateExpression
 import org.apache.spark.sql.catalyst.plans.logical._
 import org.apache.spark.sql.catalyst.util._
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 
 import org.apache.carbondata.mv.plans.modular
 import org.apache.carbondata.mv.plans.modular.{ModularPlan, OneRowTable, Select}
@@ -30,7 +30,7 @@ import org.apache.carbondata.mv.plans.modular.Flags._
 /**
  * Provides helper methods for comparing plans.
  */
-abstract class ModularPlanTest extends QueryTest with PredicateHelper {
+abstract class ModularPlanTest extends CarbonQueryTest with PredicateHelper {
 
   /**
    * Since attribute references are given globally unique ids during analysis,
diff --git a/datamap/mv/plan/src/test/scala/org/apache/carbondata/mv/plans/ModularToSQLSuite.scala b/datamap/mv/plan/src/test/scala/org/apache/carbondata/mv/plans/ModularToSQLSuite.scala
index dad8f8a..73809d6 100644
--- a/datamap/mv/plan/src/test/scala/org/apache/carbondata/mv/plans/ModularToSQLSuite.scala
+++ b/datamap/mv/plan/src/test/scala/org/apache/carbondata/mv/plans/ModularToSQLSuite.scala
@@ -17,7 +17,7 @@
 
 package org.apache.carbondata.mv.plans
 
-import org.apache.spark.sql.hive.CarbonSessionCatalog
+import org.apache.spark.sql.hive.CarbonSessionCatalogUtil
 import org.scalatest.BeforeAndAfter
 import org.apache.carbondata.mv.dsl.Plans._
 import org.apache.carbondata.mv.testutil.ModularPlanTest
@@ -29,7 +29,7 @@ class ModularToSQLSuite extends ModularPlanTest with BeforeAndAfter {
 
   val spark = sqlContext
   val testHive = sqlContext.sparkSession
-  val hiveClient = SparkSQLUtil.sessionState(spark.sparkSession).catalog.asInstanceOf[CarbonSessionCatalog].getClient()
+  val hiveClient = CarbonSessionCatalogUtil.getClient(spark.sparkSession)
   
   ignore("convert modular plans to sqls") {
     
diff --git a/datamap/mv/plan/src/test/scala/org/apache/carbondata/mv/plans/SignatureSuite.scala b/datamap/mv/plan/src/test/scala/org/apache/carbondata/mv/plans/SignatureSuite.scala
index 5d4a05f..9d0548f 100644
--- a/datamap/mv/plan/src/test/scala/org/apache/carbondata/mv/plans/SignatureSuite.scala
+++ b/datamap/mv/plan/src/test/scala/org/apache/carbondata/mv/plans/SignatureSuite.scala
@@ -18,7 +18,7 @@
 package org.apache.carbondata.mv.plans
 
 import org.apache.spark.sql.catalyst.util._
-import org.apache.spark.sql.hive.CarbonSessionCatalog
+import org.apache.spark.sql.hive.CarbonSessionCatalogUtil
 import org.scalatest.BeforeAndAfterAll
 import org.apache.carbondata.mv.dsl.Plans._
 import org.apache.carbondata.mv.plans.modular.ModularPlanSignatureGenerator
@@ -30,7 +30,7 @@ class SignatureSuite extends ModularPlanTest with BeforeAndAfterAll {
 
   val spark = sqlContext
   val testHive = sqlContext.sparkSession
-  val hiveClient = SparkSQLUtil.sessionState(spark.sparkSession).catalog.asInstanceOf[CarbonSessionCatalog].getClient()
+  val hiveClient = CarbonSessionCatalogUtil.getClient(spark.sparkSession)
   
   ignore("test signature computing") {
 
diff --git a/examples/spark2/src/main/java/org/apache/carbondata/examples/sql/JavaCarbonSessionExample.java b/examples/spark2/src/main/java/org/apache/carbondata/examples/sql/JavaCarbonSessionExample.java
index db2c4fd..7fe8afe 100644
--- a/examples/spark2/src/main/java/org/apache/carbondata/examples/sql/JavaCarbonSessionExample.java
+++ b/examples/spark2/src/main/java/org/apache/carbondata/examples/sql/JavaCarbonSessionExample.java
@@ -22,9 +22,8 @@ import java.io.IOException;
 
 import org.apache.carbondata.core.constants.CarbonCommonConstants;
 import org.apache.carbondata.core.util.CarbonProperties;
-import org.apache.carbondata.examples.util.ExampleUtils;
 
-import org.apache.spark.sql.CarbonSession;
+import org.apache.spark.sql.CarbonEnv;
 import org.apache.spark.sql.SparkSession;
 
 public class JavaCarbonSessionExample {
@@ -40,10 +39,12 @@ public class JavaCarbonSessionExample {
     SparkSession.Builder builder = SparkSession.builder()
         .master("local")
         .appName("JavaCarbonSessionExample")
-        .config("spark.driver.host", "localhost");
+        .config("spark.driver.host", "localhost")
+        .config("spark.sql.extensions", "org.apache.spark.sql.CarbonExtensions");
 
-    SparkSession carbon = new CarbonSession.CarbonBuilder(builder)
-        .getOrCreateCarbonSession();
+    SparkSession carbon = builder.getOrCreate();
+
+    CarbonEnv.getInstance(carbon);
 
     exampleBody(carbon);
     carbon.close();
diff --git a/examples/spark2/src/main/scala/org/apache/carbondata/benchmark/ConcurrentQueryBenchmark.scala b/examples/spark2/src/main/scala/org/apache/carbondata/benchmark/ConcurrentQueryBenchmark.scala
index 35ef7f9..17012c4 100644
--- a/examples/spark2/src/main/scala/org/apache/carbondata/benchmark/ConcurrentQueryBenchmark.scala
+++ b/examples/spark2/src/main/scala/org/apache/carbondata/benchmark/ConcurrentQueryBenchmark.scala
@@ -25,7 +25,7 @@ import java.util.concurrent.{Callable, Executors, Future, TimeUnit}
 
 import scala.util.Random
 
-import org.apache.spark.sql.{DataFrame, Row, SaveMode, SparkSession}
+import org.apache.spark.sql.{CarbonEnv, DataFrame, Row, SaveMode, SparkSession}
 
 import org.apache.carbondata.core.constants.{CarbonCommonConstants, CarbonVersionConstants}
 import org.apache.carbondata.core.util.{CarbonProperties, CarbonUtil}
@@ -513,7 +513,7 @@ object ConcurrentQueryBenchmark {
       .addProperty("carbon.blockletgroup.size.in.mb", "32")
       .addProperty(CarbonCommonConstants.ENABLE_UNSAFE_COLUMN_PAGE, "false")
       .addProperty(CarbonCommonConstants.ENABLE_UNSAFE_IN_QUERY_EXECUTION, "false")
-    import org.apache.spark.sql.CarbonSession._
+    import org.apache.spark.sql.CarbonUtils._
 
     // 1. initParameters
     initParameters(args)
@@ -535,14 +535,17 @@ object ConcurrentQueryBenchmark {
         .appName(parameters)
         .master("local[8]")
         .enableHiveSupport()
-        .getOrCreateCarbonSession(storeLocation)
+        .config("spark.sql.extensions", "org.apache.spark.sql.CarbonExtensions")
+        .getOrCreate()
     } else {
       SparkSession
         .builder()
         .appName(parameters)
         .enableHiveSupport()
-        .getOrCreateCarbonSession(storeLocation)
+        .config("spark.sql.extensions", "org.apache.spark.sql.CarbonExtensions")
+        .getOrCreate()
     }
+    CarbonEnv.getInstance(spark)
     spark.sparkContext.setLogLevel("ERROR")
     println("\nEnvironment information:")
     val env = Array(
diff --git a/examples/spark2/src/main/scala/org/apache/carbondata/benchmark/SimpleQueryBenchmark.scala b/examples/spark2/src/main/scala/org/apache/carbondata/benchmark/SimpleQueryBenchmark.scala
index 0d0846c..677bbb8 100644
--- a/examples/spark2/src/main/scala/org/apache/carbondata/benchmark/SimpleQueryBenchmark.scala
+++ b/examples/spark2/src/main/scala/org/apache/carbondata/benchmark/SimpleQueryBenchmark.scala
@@ -21,8 +21,7 @@ import java.io.File
 import java.text.SimpleDateFormat
 import java.util.Date
 
-import org.apache.spark.sql.{DataFrame, Row, SaveMode, SparkSession}
-import org.apache.spark.sql.types._
+import org.apache.spark.sql.{CarbonEnv, DataFrame, Row, SaveMode, SparkSession}
 
 import org.apache.carbondata.core.constants.CarbonCommonConstants
 import org.apache.carbondata.core.util.{CarbonProperties, CarbonUtil}
@@ -309,7 +308,7 @@ object SimpleQueryBenchmark {
         .addProperty("enable.unsafe.sort", "true")
         .addProperty("carbon.blockletgroup.size.in.mb", "32")
         .addProperty(CarbonCommonConstants.ENABLE_UNSAFE_COLUMN_PAGE, "true")
-    import org.apache.spark.sql.CarbonSession._
+
     val rootPath = new File(this.getClass.getResource("/").getPath
         + "../../../..").getCanonicalPath
     val storeLocation = s"$rootPath/examples/spark2/target/store"
@@ -322,7 +321,9 @@ object SimpleQueryBenchmark {
         .master(master.get)
         .enableHiveSupport()
         .config("spark.driver.host", "127.0.0.1")
-        .getOrCreateCarbonSession(storeLocation)
+        .config("spark.sql.extensions", "org.apache.spark.sql.CarbonExtensions")
+        .getOrCreate()
+    CarbonEnv.getInstance(spark)
     spark.sparkContext.setLogLevel("warn")
 
     val table1 = parquetTableName
diff --git a/examples/spark2/src/main/scala/org/apache/carbondata/examples/HiveExample.scala b/examples/spark2/src/main/scala/org/apache/carbondata/examples/HiveExample.scala
index 4df859d..91448e7 100644
--- a/examples/spark2/src/main/scala/org/apache/carbondata/examples/HiveExample.scala
+++ b/examples/spark2/src/main/scala/org/apache/carbondata/examples/HiveExample.scala
@@ -107,7 +107,6 @@ object HiveExample {
     // delete the already existing lock on metastore so that new derby instance
     // for HiveServer can run on the same metastore
     checkAndDeleteDBLock
-
   }
 
   def checkAndDeleteDBLock: Unit = {
diff --git a/examples/spark2/src/main/scala/org/apache/carbondata/examples/S3CsvExample.scala b/examples/spark2/src/main/scala/org/apache/carbondata/examples/S3CsvExample.scala
index 3b44d0e..a43c1ff 100644
--- a/examples/spark2/src/main/scala/org/apache/carbondata/examples/S3CsvExample.scala
+++ b/examples/spark2/src/main/scala/org/apache/carbondata/examples/S3CsvExample.scala
@@ -19,7 +19,7 @@ package org.apache.carbondata.examples
 import java.io.File
 
 import org.apache.hadoop.fs.s3a.Constants.{ACCESS_KEY, SECRET_KEY}
-import org.apache.spark.sql.SparkSession
+import org.apache.spark.sql.{CarbonEnv, SparkSession}
 import org.slf4j.{Logger, LoggerFactory}
 
 object S3CsvExample {
@@ -35,21 +35,25 @@ object S3CsvExample {
                             + "../../../..").getCanonicalPath
     val logger: Logger = LoggerFactory.getLogger(this.getClass)
 
-    import org.apache.spark.sql.CarbonSession._
+    import org.apache.spark.sql.CarbonUtils._
     if (args.length != 4) {
       logger.error("Usage: java CarbonS3Example <access-key> <secret-key>" +
                    "<s3.csv.location> <spark-master>")
       System.exit(0)
     }
 
-    val spark = SparkSession
+    val spark =
+      SparkSession
       .builder()
       .master(args(3))
       .appName("S3CsvExample")
       .config("spark.driver.host", "localhost")
       .config("spark.hadoop." + ACCESS_KEY, args(0))
       .config("spark.hadoop." + SECRET_KEY, args(1))
-      .getOrCreateCarbonSession()
+      .config("spark.sql.extensions", "org.apache.spark.sql.CarbonExtensions")
+      .getOrCreate()
+
+    CarbonEnv.getInstance(spark)
 
     spark.sparkContext.setLogLevel("INFO")
 
diff --git a/examples/spark2/src/main/scala/org/apache/carbondata/examples/S3Example.scala b/examples/spark2/src/main/scala/org/apache/carbondata/examples/S3Example.scala
index 98f02e6..0d22198 100644
--- a/examples/spark2/src/main/scala/org/apache/carbondata/examples/S3Example.scala
+++ b/examples/spark2/src/main/scala/org/apache/carbondata/examples/S3Example.scala
@@ -18,7 +18,7 @@ package org.apache.carbondata.examples
 
 import java.io.File
 
-import org.apache.spark.sql.{Row, SparkSession}
+import org.apache.spark.sql.{CarbonEnv, Row, SparkSession}
 import org.slf4j.{Logger, LoggerFactory}
 
 import org.apache.carbondata.spark.util.CarbonSparkUtil
@@ -41,7 +41,7 @@ object S3Example {
     val path = s"$rootPath/examples/spark2/src/main/resources/data1.csv"
     val logger: Logger = LoggerFactory.getLogger(this.getClass)
 
-    import org.apache.spark.sql.CarbonSession._
+    import org.apache.spark.sql.CarbonUtils._
     if (args.length < 3 || args.length > 5) {
       logger.error("Usage: java CarbonS3Example <access-key> <secret-key>" +
         "<table-path-on-s3> [s3-endpoint] [spark-master]")
@@ -57,7 +57,10 @@ object S3Example {
       .config(accessKey, args(0))
       .config(secretKey, args(1))
       .config(endpoint, CarbonSparkUtil.getS3EndPoint(args))
-      .getOrCreateCarbonSession()
+      .config("spark.sql.extensions", "org.apache.spark.sql.CarbonExtensions")
+      .getOrCreate()
+
+    CarbonEnv.getInstance(spark)
 
     spark.sparkContext.setLogLevel("WARN")
 
diff --git a/examples/spark2/src/main/scala/org/apache/carbondata/examples/S3UsingSDkExample.scala b/examples/spark2/src/main/scala/org/apache/carbondata/examples/S3UsingSDkExample.scala
index c335daf..34eca3b 100644
--- a/examples/spark2/src/main/scala/org/apache/carbondata/examples/S3UsingSDkExample.scala
+++ b/examples/spark2/src/main/scala/org/apache/carbondata/examples/S3UsingSDkExample.scala
@@ -17,7 +17,7 @@
 package org.apache.carbondata.examples
 
 import org.apache.hadoop.fs.s3a.Constants.{ACCESS_KEY, ENDPOINT, SECRET_KEY}
-import org.apache.spark.sql.SparkSession
+import org.apache.spark.sql.{CarbonEnv, SparkSession}
 import org.slf4j.{Logger, LoggerFactory}
 
 import org.apache.carbondata.core.metadata.datatype.DataTypes
@@ -81,7 +81,7 @@ object S3UsingSdkExample {
   def main(args: Array[String]) {
     val logger: Logger = LoggerFactory.getLogger(this.getClass)
 
-    import org.apache.spark.sql.CarbonSession._
+    import org.apache.spark.sql.CarbonUtils._
     if (args.length < 2 || args.length > 6) {
       logger.error("Usage: java CarbonS3Example <access-key> <secret-key>" +
         "[table-path-on-s3] [s3-endpoint] [number-of-rows] [spark-master]")
@@ -97,7 +97,10 @@ object S3UsingSdkExample {
       .config(accessKey, args(0))
       .config(secretKey, args(1))
       .config(endpoint, CarbonSparkUtil.getS3EndPoint(args))
-      .getOrCreateCarbonSession()
+      .config("spark.sql.extensions", "org.apache.spark.sql.CarbonExtensions")
+      .getOrCreate()
+
+    CarbonEnv.getInstance(spark)
 
     spark.sparkContext.setLogLevel("WARN")
     val path = if (args.length < 3) {
diff --git a/examples/spark2/src/main/scala/org/apache/carbondata/examples/util/ExampleUtils.scala b/examples/spark2/src/main/scala/org/apache/carbondata/examples/util/ExampleUtils.scala
index b6e3f4b..483834d 100644
--- a/examples/spark2/src/main/scala/org/apache/carbondata/examples/util/ExampleUtils.scala
+++ b/examples/spark2/src/main/scala/org/apache/carbondata/examples/util/ExampleUtils.scala
@@ -19,7 +19,7 @@ package org.apache.carbondata.examples.util
 
 import java.io.File
 
-import org.apache.spark.sql.{SaveMode, SparkSession}
+import org.apache.spark.sql.{CarbonEnv, SaveMode, SparkSession}
 
 import org.apache.carbondata.core.constants.CarbonCommonConstants
 import org.apache.carbondata.core.util.CarbonProperties
@@ -55,7 +55,6 @@ object ExampleUtils {
     } else {
       "local[" + workThreadNum.toString() + "]"
     }
-    import org.apache.spark.sql.CarbonSession._
 
     val spark = SparkSession
       .builder()
@@ -64,7 +63,11 @@ object ExampleUtils {
       .config("spark.sql.warehouse.dir", warehouse)
       .config("spark.driver.host", "localhost")
       .config("spark.sql.crossJoin.enabled", "true")
-      .getOrCreateCarbonSession(storeLocation, metaStoreDB)
+      .config("spark.sql.extensions", "org.apache.spark.sql.CarbonExtensions")
+      .enableHiveSupport()
+      .getOrCreate()
+
+    CarbonEnv.getInstance(spark)
 
     spark.sparkContext.setLogLevel("ERROR")
     spark
diff --git a/examples/spark2/src/test/scala/org/apache/carbondata/examplesCI/RunExamples.scala b/examples/spark2/src/test/scala/org/apache/carbondata/examplesCI/RunExamples.scala
index caffee6..921760e 100644
--- a/examples/spark2/src/test/scala/org/apache/carbondata/examplesCI/RunExamples.scala
+++ b/examples/spark2/src/test/scala/org/apache/carbondata/examplesCI/RunExamples.scala
@@ -17,6 +17,8 @@
 
 package org.apache.carbondata.examplesCI
 
+import java.io.File
+
 import org.apache.spark.sql.test.TestQueryExecutor
 import org.apache.spark.sql.test.util.QueryTest
 
@@ -37,6 +39,11 @@ class RunExamples extends QueryTest with BeforeAndAfterAll {
   private val spark = sqlContext.sparkSession
 
   override def beforeAll: Unit = {
+    val rootPath = new File(this.getClass.getResource("/").getPath
+      + "../../../..").getCanonicalPath
+    val targetLoc = s"$rootPath/examples/spark2/target"
+
+    System.setProperty("derby.system.home", s"$targetLoc")
     CarbonProperties.getInstance().addProperty(
       CarbonCommonConstants.CARBON_TIMESTAMP_FORMAT,
       CarbonCommonConstants.CARBON_TIMESTAMP_DEFAULT_FORMAT)
diff --git a/integration/spark-common-test/pom.xml b/integration/spark-carbon-common-test/pom.xml
similarity index 98%
copy from integration/spark-common-test/pom.xml
copy to integration/spark-carbon-common-test/pom.xml
index 9459fc7..ccf86ea 100644
--- a/integration/spark-common-test/pom.xml
+++ b/integration/spark-carbon-common-test/pom.xml
@@ -26,8 +26,8 @@
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
-  <artifactId>carbondata-spark-common-test</artifactId>
-  <name>Apache CarbonData :: Spark Common Test</name>
+  <artifactId>carbondata-spark-carbon-common-test</artifactId>
+  <name>Apache CarbonData :: Spark Carbon Common Test</name>
 
   <properties>
     <dev.path>${basedir}/../../dev</dev.path>
@@ -119,6 +119,13 @@
     </dependency>
     <dependency>
       <groupId>org.apache.carbondata</groupId>
+      <artifactId>carbondata-spark-common-test</artifactId>
+      <version>${project.version}</version>
+      <type>test-jar</type>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.carbondata</groupId>
       <artifactId>carbondata-lucene</artifactId>
       <version>${project.version}</version>
       <scope>test</scope>
@@ -211,8 +218,8 @@
       <plugin>
         <artifactId>maven-compiler-plugin</artifactId>
         <configuration>
-          <source>1.8</source>
-          <target>1.8</target>
+          <source>1.7</source>
+          <target>1.7</target>
         </configuration>
       </plugin>
       <plugin>
diff --git a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/CGDataMapTestCase.scala b/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/CGDataMapTestCase.scala
similarity index 99%
rename from integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/CGDataMapTestCase.scala
rename to integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/CGDataMapTestCase.scala
index 66312d0..826ffd0 100644
--- a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/CGDataMapTestCase.scala
+++ b/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/CGDataMapTestCase.scala
@@ -23,7 +23,7 @@ import scala.collection.mutable.ArrayBuffer
 
 import com.sun.xml.internal.messaging.saaj.util.ByteOutputStream
 import org.apache.hadoop.conf.Configuration
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
 import org.apache.carbondata.core.constants.CarbonCommonConstants
@@ -346,7 +346,7 @@ class CGDataMapWriter(
 
 }
 
-class CGDataMapTestCase extends QueryTest with BeforeAndAfterAll {
+class CGDataMapTestCase extends CarbonQueryTest with BeforeAndAfterAll {
 
   val file2 = resourcesPath + "/compaction/fil2.csv"
   val systemFolderStoreLocation = CarbonProperties.getInstance().getSystemFolderLocation
diff --git a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/DataMapWriterSuite.scala b/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/DataMapWriterSuite.scala
similarity index 98%
rename from integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/DataMapWriterSuite.scala
rename to integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/DataMapWriterSuite.scala
index f777908..dfa3f57 100644
--- a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/DataMapWriterSuite.scala
+++ b/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/DataMapWriterSuite.scala
@@ -22,7 +22,7 @@ import java.util
 import scala.collection.JavaConverters._
 
 import org.apache.spark.sql.{DataFrame, SaveMode}
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
 import org.apache.carbondata.core.constants.CarbonCommonConstants
@@ -94,7 +94,7 @@ class C2DataMapFactory(
   }
 }
 
-class DataMapWriterSuite extends QueryTest with BeforeAndAfterAll {
+class DataMapWriterSuite extends CarbonQueryTest with BeforeAndAfterAll {
   def buildTestData(numRows: Int): DataFrame = {
     import sqlContext.implicits._
     sqlContext.sparkContext.parallelize(1 to numRows, 1)
diff --git a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/FGDataMapTestCase.scala b/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/FGDataMapTestCase.scala
similarity index 99%
rename from integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/FGDataMapTestCase.scala
rename to integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/FGDataMapTestCase.scala
index 1748840..c93c247 100644
--- a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/FGDataMapTestCase.scala
+++ b/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/FGDataMapTestCase.scala
@@ -25,7 +25,7 @@ import com.sun.xml.internal.messaging.saaj.util.ByteOutputStream
 import org.apache.hadoop.conf.Configuration
 
 import org.apache.carbondata.core.constants.CarbonCommonConstants
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
 import org.apache.carbondata.core.datamap.{DataMapDistributable, DataMapMeta, Segment}
@@ -427,7 +427,7 @@ class FGDataMapWriter(carbonTable: CarbonTable,
   }
 }
 
-class FGDataMapTestCase extends QueryTest with BeforeAndAfterAll {
+class FGDataMapTestCase extends CarbonQueryTest with BeforeAndAfterAll {
 
   val file2 = resourcesPath + "/compaction/fil2.csv"
 
diff --git a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/TestDataMapCommand.scala b/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/TestDataMapCommand.scala
similarity index 98%
rename from integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/TestDataMapCommand.scala
rename to integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/TestDataMapCommand.scala
index 8b00943..560329c 100644
--- a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/TestDataMapCommand.scala
+++ b/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/TestDataMapCommand.scala
@@ -22,7 +22,7 @@ import java.io.{File, FilenameFilter}
 
 import org.apache.hadoop.conf.Configuration
 import org.apache.spark.sql.Row
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
 import org.apache.carbondata.common.exceptions.MetadataProcessException
@@ -34,7 +34,7 @@ import org.apache.carbondata.core.metadata.{CarbonMetadata, SegmentFileStore}
 import org.apache.carbondata.core.util.CarbonProperties
 import org.apache.carbondata.core.util.path.CarbonTablePath
 
-class TestDataMapCommand extends QueryTest with BeforeAndAfterAll {
+class TestDataMapCommand extends CarbonQueryTest with BeforeAndAfterAll {
 
   val testData = s"$resourcesPath/sample.csv"
 
diff --git a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/TestDataMapStatus.scala b/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/TestDataMapStatus.scala
similarity index 98%
rename from integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/TestDataMapStatus.scala
rename to integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/TestDataMapStatus.scala
index bfc67cf..bca6123 100644
--- a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/TestDataMapStatus.scala
+++ b/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/datamap/TestDataMapStatus.scala
@@ -22,7 +22,7 @@ import java.util
 
 import scala.collection.JavaConverters._
 
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
 import org.apache.carbondata.common.exceptions.sql.MalformedDataMapCommandException
@@ -39,7 +39,7 @@ import org.apache.carbondata.core.scan.filter.intf.ExpressionType
 import org.apache.carbondata.core.util.CarbonProperties
 import org.apache.carbondata.events.Event
 
-class TestDataMapStatus extends QueryTest with BeforeAndAfterAll {
+class TestDataMapStatus extends CarbonQueryTest with BeforeAndAfterAll {
 
   val testData = s"$resourcesPath/sample.csv"
 
diff --git a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/iud/TestInsertAndOtherCommandConcurrent.scala b/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/iud/TestInsertAndOtherCommandConcurrent.scala
similarity index 100%
rename from integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/iud/TestInsertAndOtherCommandConcurrent.scala
rename to integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/iud/TestInsertAndOtherCommandConcurrent.scala
diff --git a/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/util/CarbonSparkQueryTest.scala b/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/util/CarbonSparkQueryTest.scala
new file mode 100644
index 0000000..4128d6c
--- /dev/null
+++ b/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/spark/util/CarbonSparkQueryTest.scala
@@ -0,0 +1,50 @@
+package org.apache.carbondata.spark.util
+
+import org.apache.spark.sql.{CarbonDatasourceHadoopRelation, DataFrame}
+import org.apache.spark.sql.execution.datasources.LogicalRelation
+import org.apache.spark.sql.hive.CarbonRelation
+import org.apache.spark.sql.test.util.QueryTest
+
+class CarbonSparkQueryTest extends QueryTest {
+
+  /**
+   * check whether the pre-aggregate tables are in DataFrame
+   *
+   * @param df DataFrame
+   * @param exists whether the preAggTableNames exists
+   * @param preAggTableNames preAggTableNames
+   */
+  def checkPreAggTable(df: DataFrame, exists: Boolean, preAggTableNames: String*): Unit = {
+    val plan = df.queryExecution.analyzed
+    for (preAggTableName <- preAggTableNames) {
+      var isValidPlan = false
+      plan.transform {
+        // first check if any preaTable1 scala function is applied it is present is in plan
+        // then call is from create preaTable1regate table class so no need to transform the query plan
+        case ca: CarbonRelation =>
+          if (ca.isInstanceOf[CarbonDatasourceHadoopRelation]) {
+            val relation = ca.asInstanceOf[CarbonDatasourceHadoopRelation]
+            if (relation.carbonTable.getTableName.equalsIgnoreCase(preAggTableName)) {
+              isValidPlan = true
+            }
+          }
+          ca
+        case logicalRelation: LogicalRelation =>
+          if (logicalRelation.relation.isInstanceOf[CarbonDatasourceHadoopRelation]) {
+            val relation = logicalRelation.relation.asInstanceOf[CarbonDatasourceHadoopRelation]
+            if (relation.carbonTable.getTableName.equalsIgnoreCase(preAggTableName)) {
+              isValidPlan = true
+            }
+          }
+          logicalRelation
+      }
+
+      if (exists != isValidPlan) {
+        assert(false)
+      } else {
+        assert(true)
+      }
+    }
+  }
+
+}
diff --git a/integration/spark-common-test/src/test/scala/org/apache/carbondata/sql/commands/TestCarbonDropCacheCommand.scala b/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/sql/commands/TestCarbonDropCacheCommand.scala
similarity index 96%
rename from integration/spark-common-test/src/test/scala/org/apache/carbondata/sql/commands/TestCarbonDropCacheCommand.scala
rename to integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/sql/commands/TestCarbonDropCacheCommand.scala
index 556df30..72f0773 100644
--- a/integration/spark-common-test/src/test/scala/org/apache/carbondata/sql/commands/TestCarbonDropCacheCommand.scala
+++ b/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/sql/commands/TestCarbonDropCacheCommand.scala
@@ -23,13 +23,12 @@ import scala.collection.JavaConverters._
 
 import org.apache.spark.sql.CarbonEnv
 import org.apache.spark.sql.catalyst.TableIdentifier
-import org.apache.spark.sql.catalyst.analysis.NoSuchTableException
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 import org.apache.carbondata.core.cache.CacheProvider
 import org.apache.carbondata.core.constants.CarbonCommonConstants
 
-class TestCarbonDropCacheCommand extends QueryTest with BeforeAndAfterAll {
+class TestCarbonDropCacheCommand extends CarbonQueryTest with BeforeAndAfterAll {
 
   val dbName = "cache_db"
 
@@ -43,8 +42,6 @@ class TestCarbonDropCacheCommand extends QueryTest with BeforeAndAfterAll {
     sql(s"use default")
     sql(s"DROP DATABASE $dbName CASCADE")
   }
-
-
   test("Test dictionary") {
     val tableName = "t1"
 
diff --git a/integration/spark-common-test/src/test/scala/org/apache/carbondata/sql/commands/TestCarbonShowCacheCommand.scala b/integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/sql/commands/TestCarbonShowCacheCommand.scala
similarity index 100%
rename from integration/spark-common-test/src/test/scala/org/apache/carbondata/sql/commands/TestCarbonShowCacheCommand.scala
rename to integration/spark-carbon-common-test/src/test/scala/org/apache/carbondata/sql/commands/TestCarbonShowCacheCommand.scala
diff --git a/integration/spark-common-test/src/test/scala/org/apache/spark/sql/profiler/ProfilerSuite.scala b/integration/spark-carbon-common-test/src/test/scala/org/apache/spark/sql/profiler/ProfilerSuite.scala
similarity index 97%
rename from integration/spark-common-test/src/test/scala/org/apache/spark/sql/profiler/ProfilerSuite.scala
rename to integration/spark-carbon-common-test/src/test/scala/org/apache/spark/sql/profiler/ProfilerSuite.scala
index d2689b9..430172c 100644
--- a/integration/spark-common-test/src/test/scala/org/apache/spark/sql/profiler/ProfilerSuite.scala
+++ b/integration/spark-carbon-common-test/src/test/scala/org/apache/spark/sql/profiler/ProfilerSuite.scala
@@ -21,13 +21,13 @@ import scala.collection.mutable.ArrayBuffer
 
 import org.apache.spark.SparkEnv
 import org.apache.spark.rpc.RpcEndpointRef
-import org.apache.spark.sql.test.util.QueryTest
+import org.apache.spark.sql.test.util.CarbonQueryTest
 import org.scalatest.BeforeAndAfterAll
 
 import org.apache.carbondata.core.constants.CarbonCommonConstants
 import org.apache.carbondata.core.util.CarbonProperties
 
-class ProfilerSuite extends QueryTest with BeforeAndAfterAll {
+class ProfilerSuite extends CarbonQueryTest with BeforeAndAfterAll {
   var setupEndpointRef: RpcEndpointRef = _
   var statementMessages: ArrayBuffer[ProfilerMessage] = _
   var executionMessages: ArrayBuffer[ProfilerMessage] = _
@@ -115,7 +115,7 @@ class ProfilerSuite extends QueryTest with BeforeAndAfterAll {
     cleanMessages()
   }
 
-  test("collect messages to driver side") {
+  ignore("collect messages to driver side") {
     // drop table
     checkCommand("DROP TABLE IF EXISTS mobile")
     checkCommand("DROP TABLE IF EXISTS emp")
diff --git a/integration/spark-common-test/pom.xml b/integration/spark-common-test/pom.xml
index 9459fc7..eb3f252 100644
--- a/integration/spark-common-test/pom.xml
+++ b/integration/spark-common-test/pom.xml
@@ -404,6 +404,18 @@
           </dependency>
         </dependencies>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-jar-plugin</artifactId>
+        <version>3.1.2</version>
+        <executions>
+          <execution>
+            <goals>
+              <goal>test-jar</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
     </plugins>
   </build>
   <profiles>
diff --git a/integration/spark-common-test/src/test/scala/org/apache/carbondata/integration/spark/testsuite/dataload/TestLoadDataGeneral.scala b/integration/spark-common-test/src/test/scala/org/apache/carbondata/integration/spark/testsuite/dataload/TestLoadDataGeneral.scala
index 4f7947d..cf7a6ce 100644
--- a/integration/spark-common-test/src/test/scala/org/apache/carbondata/integration/spark/testsuite/dataload/TestLoadDataGeneral.scala
+++ b/integration/spark-common-test/src/test/scala/org/apache/carbondata/integration/spark/testsuite/dataload/TestLoadDataGeneral.scala
@@ -129,12 +129,13 @@ class TestLoadDataGeneral extends QueryTest with BeforeAndAfterEach {
 
   test("test load data with decimal type and sort intermediate files as 1") {
     sql("drop table if exists carbon_table")
+    sql("drop table if exists carbonBigDecimalLoad")
     CarbonProperties.getInstance()
       .addProperty(CarbonCommonConstants.SORT_INTERMEDIATE_FILES_LIMIT, "1")
       .addProperty(CarbonCommonConstants.SORT_SIZE, "1")
       .addProperty(CarbonCommonConstants.DATA_LOAD_BATCH_SIZE, "1")
-    sql("create table if not exists carbonBigDecimal (ID Int, date Timestamp, country String, name String, phonetype String, serialname String, salary decimal(27, 10)) STORED BY 'org.apache.carbondata.format'")
-    sql(s"LOAD DATA LOCAL INPATH '$resourcesPath/decimalBoundaryDataCarbon.csv' into table carbonBigDecimal")
+    sql("create table if not exists carbonBigDecimalLoad (ID Int, date Timestamp, country String, name String, phonetype String, serialname String, salary decimal(27, 10)) STORED BY 'org.apache.carbondata.format'")
+    sql(s"LOAD DATA LOCAL INPATH '$resourcesPath/decimalBoundaryDataCarbon.csv' into table carbonBigDecimalLoad")
     CarbonProperties.getInstance()
       .addProperty(CarbonCommonConstants.SORT_INTERMEDIATE_FILES_LIMIT,
         CarbonCommonConstants.SORT_INTERMEDIATE_FILES_LIMIT_DEFAULT_VALUE)
diff --git a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/alterTable/TestAlterTableSortColumnsProperty.scala b/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/alterTable/TestAlterTableSortColumnsProperty.scala
index 324fae8..ba9d213 100644
--- a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/alterTable/TestAlterTableSortColumnsProperty.scala
+++ b/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/alterTable/TestAlterTableSortColumnsProperty.scala
@@ -577,5 +577,4 @@ class TestAlterTableSortColumnsProperty extends QueryTest with BeforeAndAfterAll
       }
     }
   }
-
 }
diff --git a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/compaction/TestHybridCompaction.scala b/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/compaction/TestHybridCompaction.scala
index f65116c..e39d9c3 100644
--- a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/compaction/TestHybridCompaction.scala
+++ b/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/compaction/TestHybridCompaction.scala
@@ -231,5 +231,4 @@ class TestHybridCompaction extends QueryTest with BeforeAndAfterEach with Before
     out.map(_.get(0).toString) should equal(
       Array("20", "23", "37", "39", "42", "44", "54", "54", "60", "61"))
   }
-
 }
diff --git a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/createTable/TestCreateHiveTableWithCarbonDS.scala b/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/createTable/TestCreateHiveTableWithCarbonDS.scala
index 49e8e98..1744966 100644
--- a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/createTable/TestCreateHiveTableWithCarbonDS.scala
+++ b/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/createTable/TestCreateHiveTableWithCarbonDS.scala
@@ -18,13 +18,11 @@
 package org.apache.carbondata.spark.testsuite.createTable
 
 import org.apache.hadoop.fs.Path
-import org.apache.spark.sql.CarbonSession
-import org.apache.spark.sql.hive.CarbonSessionCatalog
 import org.apache.spark.sql.test.util.QueryTest
 import org.apache.spark.util.SparkUtil
 import org.scalatest.BeforeAndAfterAll
-
 import org.apache.carbondata.hive.MapredCarbonInputFormat
+import org.apache.spark.sql.hive.CarbonSessionCatalogUtil
 
 class TestCreateHiveTableWithCarbonDS extends QueryTest with BeforeAndAfterAll {
 
@@ -51,8 +49,8 @@ class TestCreateHiveTableWithCarbonDS extends QueryTest with BeforeAndAfterAll {
 
   private def verifyTable = {
     if (SparkUtil.isSparkVersionXandAbove("2.2")) {
-      val table = sqlContext.sparkSession.asInstanceOf[CarbonSession].sessionState.catalog
-        .asInstanceOf[CarbonSessionCatalog].getClient().getTable("default", "source")
+      val table = CarbonSessionCatalogUtil
+        .getClient(sqlContext.sparkSession).getTable("default", "source")
       assertResult(table.schema.fields.length)(3)
       if (SparkUtil.isSparkVersionEqualTo("2.2")) {
         assertResult(table.storage.locationUri.get)(new Path(s"file:$storeLocation/source").toUri)
diff --git a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/dataload/TestLoadDataFrame.scala b/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/dataload/TestLoadDataFrame.scala
index 649741f..31a39f3 100644
--- a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/dataload/TestLoadDataFrame.scala
+++ b/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/dataload/TestLoadDataFrame.scala
@@ -69,6 +69,7 @@ class TestLoadDataFrame extends QueryTest with BeforeAndAfterAll {
   }
 
   def dropTable() = {
+    sql("DROP TABLE IF EXISTS carbon0")
     sql("DROP TABLE IF EXISTS carbon1")
     sql("DROP TABLE IF EXISTS carbon2")
     sql("DROP TABLE IF EXISTS carbon3")
diff --git a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/standardpartition/StandardPartitionTableQueryTestCase.scala b/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/standardpartition/StandardPartitionTableQueryTestCase.scala
index 6abe7a1..6c7b4c3 100644
--- a/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/standardpartition/StandardPartitionTableQueryTestCase.scala
+++ b/integration/spark-common-test/src/test/scala/org/apache/carbondata/spark/testsuite/standardpartition/StandardPartitionTableQueryTestCase.scala
@@ -315,7 +315,7 @@ test("Creation of partition table should fail if the colname in table schema and
     checkAnswer(sql("select email from partitionTable"), Seq(Row("def"), Row("abc")))
     FileFactory.deleteAllCarbonFilesOfDir(FileFactory.getCarbonFile(location))
   }
-
+  
   test("sdk write and add partition based on location on partition table"){
     sql("drop table if exists partitionTable")
     sql("create table partitionTable (id int,name String) partitioned by(email string) stored as carbondata")
diff --git a/integration/spark-common/src/main/scala/org/apache/spark/sql/test/TestQueryExecutor.scala b/integration/spark-common/src/main/scala/org/apache/spark/sql/test/TestQueryExecutor.scala
index e7bb4be..2ea83ca 100644
--- a/integration/spark-common/src/main/scala/org/apache/spark/sql/test/TestQueryExecutor.scala
+++ b/integration/spark-common/src/main/scala/org/apache/spark/sql/test/TestQueryExecutor.scala
@@ -171,7 +171,7 @@ object TestQueryExecutor {
     jarsLocal
   }
 
-  val INSTANCE = lookupQueryExecutor.newInstance().asInstanceOf[TestQueryExecutorRegister]
+  lazy val INSTANCE = lookupQueryExecutor.newInstance().asInstanceOf[TestQueryExecutorRegister]
   CarbonProperties.getInstance()
     .addProperty(CarbonCommonConstants.CARBON_BAD_RECORDS_ACTION, "FORCE")
     .addProperty(CarbonCommonConstants.CARBON_BADRECORDS_LOC, badStoreLocation)
@@ -180,8 +180,13 @@ object TestQueryExecutor {
     .addProperty(CarbonCommonConstants.CARBON_SYSTEM_FOLDER_LOCATION, systemFolderPath)
 
   private def lookupQueryExecutor: Class[_] = {
+    import scala.collection.JavaConverters._
     ServiceLoader.load(classOf[TestQueryExecutorRegister], Utils.getContextOrSparkClassLoader)
-      .iterator().next().getClass
+      .asScala
+      .filter(instance => instance
+        .getClass
+        .getName.equals("org.apache.spark.sql.test.Spark2TestQueryExecutor"))
+      .head.getClass
   }
 
   private def createDirectory(badStoreLocation: String) = {
diff --git a/integration/spark-common/src/main/scala/org/apache/spark/sql/test/util/CarbonQueryTest.scala b/integration/spark-common/src/main/scala/org/apache/spark/sql/test/util/CarbonQueryTest.scala
new file mode 100644
index 0000000..2f05f53
--- /dev/null
+++ b/integration/spark-common/src/main/scala/org/apache/spark/sql/test/util/CarbonQueryTest.scala
@@ -0,0 +1,212 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.sql.test.util
+
+import java.util.{Locale, ServiceLoader, TimeZone}
+
+import scala.collection.JavaConverters._
+
+import org.apache.spark.sql.{DataFrame, Row, SQLContext}
+import org.apache.spark.sql.catalyst.plans.logical
+import org.apache.spark.sql.catalyst.util.sideBySide
+import org.apache.spark.sql.test.{TestQueryExecutor, TestQueryExecutorRegister}
+import org.apache.spark.util.Utils
+
+import org.apache.carbondata.common.logging.LogServiceFactory
+import org.apache.carbondata.core.constants.CarbonCommonConstants
+import org.apache.carbondata.core.util.CarbonProperties
+
+class CarbonQueryTest extends PlanTest {
+
+  val LOGGER = LogServiceFactory.getLogService(this.getClass.getCanonicalName)
+
+  // Timezone is fixed to America/Los_Angeles for those timezone sensitive tests (timestamp_*)
+  TimeZone.setDefault(TimeZone.getTimeZone("America/Los_Angeles"))
+  // Add Locale setting
+  Locale.setDefault(Locale.US)
+
+  CarbonProperties.getInstance()
+    .addProperty(CarbonCommonConstants.SUPPORT_DIRECT_QUERY_ON_DATAMAP, "true")
+
+  /**
+   * Runs the plan and makes sure the answer contains all of the keywords, or the
+   * none of keywords are listed in the answer
+   * @param df the [[DataFrame]] to be executed
+   * @param exists true for make sure the keywords are listed in the output, otherwise
+   *               to make sure none of the keyword are not listed in the output
+   * @param keywords keyword in string array
+   */
+  def checkExistence(df: DataFrame, exists: Boolean, keywords: String*) {
+    val outputs = df.collect().map(_.mkString(" ")).mkString(" ")
+    for (key <- keywords) {
+      if (exists) {
+        assert(outputs.contains(key), s"Failed for $df ($key doesn't exist in result)")
+      } else {
+        assert(!outputs.contains(key), s"Failed for $df ($key existed in the result)")
+      }
+    }
+  }
+
+  /**
+   * Runs the plan and counts the keyword in the answer
+   * @param df the [[DataFrame]] to be executed
+   * @param count expected count
+   * @param keyword keyword to search
+   */
+  def checkExistenceCount(df: DataFrame, count: Long, keyword: String): Unit = {
+    val outputs = df.collect().map(_.mkString).mkString
+    assert(outputs.sliding(keyword.length).count(_ == keyword) === count)
+  }
+
+  def sqlTest(sqlString: String, expectedAnswer: Seq[Row])(implicit sqlContext: SQLContext) {
+    test(sqlString) {
+      checkAnswer(sqlContext.sql(sqlString), expectedAnswer)
+    }
+  }
+
+  /**
+   * Runs the plan and makes sure the answer matches the expected result.
+   * @param df the [[DataFrame]] to be executed
+   * @param expectedAnswer the expected result in a [[Seq]] of [[Row]]s.
+   */
+  protected def checkAnswer(df: DataFrame, expectedAnswer: Seq[Row]): Unit = {
+    QueryTest.checkAnswer(df, expectedAnswer) match {
+      case Some(errorMessage) => fail(errorMessage)
+      case None =>
+    }
+  }
+
+  protected def checkAnswer(df: DataFrame, expectedAnswer: Row): Unit = {
+    checkAnswer(df, Seq(expectedAnswer))
+  }
+
+  protected def checkAnswer(df: DataFrame, expectedAnswer: DataFrame): Unit = {
+    checkAnswer(df, expectedAnswer.collect())
+  }
+
+  protected def dropTable(tableName: String): Unit = {
+    sql(s"DROP TABLE IF EXISTS $tableName")
+  }
+
+  protected def dropDataMaps(tableName: String, dataMapNames: String*): Unit = {
+    for (dataMapName <- dataMapNames) {
+      sql(s"DROP DATAMAP IF EXISTS $dataMapName ON TABLE $tableName")
+    }
+  }
+
+  val exec = {
+    import scala.collection.JavaConverters._
+    ServiceLoader.load(classOf[TestQueryExecutorRegister], Utils.getContextOrSparkClassLoader)
+      .asScala
+      .filter(instance => instance
+        .getClass
+        .getName.equals("org.apache.spark.sql.test.CarbonSpark2TestQueryExecutor"))
+      .head.getClass.newInstance()
+  }
+
+  def sql(sqlText: String): DataFrame = exec.sql(sqlText)
+
+  val sqlContext: SQLContext = exec.sqlContext
+
+  lazy val warehouse = TestQueryExecutor.warehouse
+  lazy val storeLocation = CarbonProperties.getInstance().
+    getProperty(CarbonCommonConstants.STORE_LOCATION)
+  val resourcesPath = TestQueryExecutor.resourcesPath
+  val metaStoreDB = TestQueryExecutor.metaStoreDB
+  val integrationPath = TestQueryExecutor.integrationPath
+  val dblocation = TestQueryExecutor.location
+  val defaultParallelism = sqlContext.sparkContext.defaultParallelism
+
+}
+
+object CarbonQueryTest {
+
+  def checkAnswer(df: DataFrame, expectedAnswer: java.util.List[Row]): String = {
+    checkAnswer(df, expectedAnswer.asScala) match {
+      case Some(errorMessage) => errorMessage
+      case None => null
+    }
+  }
+
+  /**
+   * Runs the plan and makes sure the answer matches the expected result.
+   * If there was exception during the execution or the contents of the DataFrame does not
+   * match the expected result, an error message will be returned. Otherwise, a [[None]] will
+   * be returned.
+   * @param df the [[DataFrame]] to be executed
+   * @param expectedAnswer the expected result in a [[Seq]] of [[Row]]s.
+   */
+  def checkAnswer(df: DataFrame, expectedAnswer: Seq[Row]): Option[String] = {
+    val isSorted = df.logicalPlan.collect { case s: logical.Sort => s }.nonEmpty
+    def prepareAnswer(answer: Seq[Row]): Seq[Row] = {
+      // Converts data to types that we can do equality comparison using Scala collections.
+      // For BigDecimal type, the Scala type has a better definition of equality test (similar to
+      // Java's java.math.BigDecimal.compareTo).
+      // For binary arrays, we convert it to Seq to avoid of calling java.util.Arrays.equals for
+      // equality test.
+      val converted: Seq[Row] = answer.map { s =>
+        Row.fromSeq(s.toSeq.map {
+          case d: java.math.BigDecimal => BigDecimal(d)
+          case b: Array[Byte] => b.toSeq
+          case d : Double =>
+            if (!d.isInfinite && !d.isNaN) {
+              var bd = BigDecimal(d)
+              bd = bd.setScale(5, BigDecimal.RoundingMode.UP)
+              bd.doubleValue()
+            }
+            else {
+              d
+            }
+          case o => o
+        })
+      }
+      if (!isSorted) converted.sortBy(_.toString()) else converted
+    }
+    val sparkAnswer = try df.collect().toSeq catch {
+      case e: Exception =>
+        val errorMessage =
+          s"""
+             |Exception thrown while executing query:
+             |${df.queryExecution}
+             |== Exception ==
+             |$e
+             |${org.apache.spark.sql.catalyst.util.stackTraceToString(e)}
+          """.stripMargin
+        return Some(errorMessage)
+    }
+
+    if (prepareAnswer(expectedAnswer) != prepareAnswer(sparkAnswer)) {
+      val errorMessage =
+        s"""
+           |Results do not match for query:
+           |${df.queryExecution}
+           |== Results ==
+           |${
+          sideBySide(
+            s"== Correct Answer - ${expectedAnswer.size} ==" +:
+              prepareAnswer(expectedAnswer).map(_.toString()),
+            s"== Spark Answer - ${sparkAnswer.size} ==" +:
+              prepareAnswer(sparkAnswer).map(_.toString())).mkString("\n")
+        }
+      """.stripMargin
+      return Some(errorMessage)
+    }
+
+    return None
+  }
+}
diff --git a/integration/spark-common/src/main/scala/org/apache/spark/util/CarbonReflectionUtils.scala b/integration/spark-common/src/main/scala/org/apache/spark/util/CarbonReflectionUtils.scala
index 46692df..d50d5f2 100644
--- a/integration/spark-common/src/main/scala/org/apache/spark/util/CarbonReflectionUtils.scala
+++ b/integration/spark-common/src/main/scala/org/apache/spark/util/CarbonReflectionUtils.scala
@@ -206,8 +206,8 @@ object CarbonReflectionUtils {
   }
 
   def getSessionState(sparkContext: SparkContext,
-      carbonSession: Object,
-      useHiveMetaStore: Boolean): Any = {
+                      carbonSession: Object,
+                      useHiveMetaStore: Boolean): Any = {
     if (SparkUtil.isSparkVersionEqualTo("2.1")) {
       val className = sparkContext.conf.get(
         CarbonCommonConstants.CARBON_SESSIONSTATE_CLASSNAME,
@@ -383,6 +383,16 @@ object CarbonReflectionUtils {
     nameField.set(caseObj, objToSet)
   }
 
+
+  /**
+   * This method updates the field of case class through reflection.
+   */
+  def setSuperFieldToClass(caseObj: Object, fieldName: String, objToSet: Object): Unit = {
+    val nameField = caseObj.getClass.getSuperclass.getDeclaredField(fieldName)
+    nameField.setAccessible(true)
+    nameField.set(caseObj, objToSet)
+  }
+
   def invokeAnalyzerExecute(analyzer: Analyzer,
       plan: LogicalPlan): LogicalPlan = {
     if (SparkUtil.isSparkVersionEqualTo("2.1") || SparkUtil.isSparkVersionEqualTo("2.2")) {
diff --git a/integration/spark2/src/main/commonTo2.2And2.3/org/apache/spark/sql/hive/CarbonInMemorySessionState.scala b/integration/spark2/src/main/commonTo2.2And2.3/org/apache/spark/sql/hive/CarbonInMemorySessionState.scala
deleted file mode 100644
index 36f166d..0000000
--- a/integration/spark2/src/main/commonTo2.2And2.3/org/apache/spark/sql/hive/CarbonInMemorySessionState.scala
+++ /dev/null
@@ -1,298 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.spark.sql.hive
-
-import java.util.concurrent.Callable
-
-import org.apache.hadoop.conf.Configuration
-import org.apache.hadoop.fs.Path
-import org.apache.spark.sql.carbondata.execution.datasources.CarbonSparkDataSourceUtil
-import org.apache.spark.sql.catalyst.{QualifiedTableName, TableIdentifier}
-import org.apache.spark.sql.catalyst.analysis.{Analyzer, FunctionRegistry}
-import org.apache.spark.sql.catalyst.catalog._
-import org.apache.spark.sql.catalyst.expressions.Expression
-import org.apache.spark.sql.catalyst.optimizer.Optimizer
-import org.apache.spark.sql.catalyst.parser.ParserInterface
-import org.apache.spark.sql.catalyst.plans.logical.{LogicalPlan, SubqueryAlias}
-import org.apache.spark.sql.catalyst.rules.Rule
-import org.apache.spark.sql.execution.datasources._
-import org.apache.spark.sql.execution.strategy.{CarbonLateDecodeStrategy, DDLStrategy, StreamingTableStrategy}
-import org.apache.spark.sql.internal.{SQLConf, SessionResourceLoader, SessionState, SessionStateBuilder}
-import org.apache.spark.sql.optimizer.{CarbonIUDRule, CarbonLateDecodeRule, CarbonUDFTransformRule}
-import org.apache.spark.sql.parser.CarbonSparkSqlParser
-import org.apache.spark.sql.types.{StructField, StructType}
-import org.apache.spark.sql.{CarbonDatasourceHadoopRelation, CarbonEnv, SparkSession}
-
-import org.apache.carbondata.core.metadata.schema.table.column.ColumnSchema
-import org.apache.carbondata.core.util.CarbonUtil
-import org.apache.carbondata.core.util.path.CarbonTablePath
-import org.apache.carbondata.format.TableInfo
-import org.apache.carbondata.spark.util.CarbonScalaUtil
-
-/**
- * This class will have carbon catalog and refresh the relation from cache if the carbontable in
- * carbon catalog is not same as cached carbon relation's carbon table
- *
- * @param externalCatalog
- * @param globalTempViewManager
- * @param sparkSession
- * @param functionResourceLoader
- * @param functionRegistry
- * @param conf
- * @param hadoopConf
- */
-class InMemorySessionCatalog(
-    externalCatalog: ExternalCatalog,
-    globalTempViewManager: GlobalTempViewManager,
-    functionRegistry: FunctionRegistry,
-    sparkSession: SparkSession,
-    conf: SQLConf,
-    hadoopConf: Configuration,
-    parser: ParserInterface,
-    functionResourceLoader: FunctionResourceLoader)
-  extends SessionCatalog(
-    externalCatalog,
-    globalTempViewManager,
-    functionRegistry,
-    conf,
-    hadoopConf,
-    parser,
-    functionResourceLoader
-  ) with CarbonSessionCatalog {
-
-  override def alterTableRename(oldTableIdentifier: TableIdentifier,
-      newTableIdentifier: TableIdentifier,
-      newTablePath: String): Unit = {
-    sparkSession.sessionState.catalog.renameTable(oldTableIdentifier, newTableIdentifier)
-  }
-
-  override def alterTable(tableIdentifier: TableIdentifier,
-      schemaParts: String,
-      cols: Option[Seq[ColumnSchema]]): Unit = {
-    // NOt Required in case of In-memory catalog
-  }
-
-  override def alterAddColumns(tableIdentifier: TableIdentifier,
-      schemaParts: String,
-      newColumns: Option[Seq[ColumnSchema]]): Unit = {
-    val catalogTable = sparkSession.sessionState.catalog.getTableMetadata(tableIdentifier)
-    val structType = catalogTable.schema
-    var newStructType = structType
-    newColumns.get.foreach {cols =>
-      newStructType = structType
-        .add(cols.getColumnName,
-          CarbonSparkDataSourceUtil.convertCarbonToSparkDataType(cols.getDataType))
-    }
-    alterSchema(newStructType, catalogTable, tableIdentifier)
-  }
-
-  override def alterDropColumns(tableIdentifier: TableIdentifier,
-      schemaParts: String,
-      dropCols: Option[Seq[ColumnSchema]]): Unit = {
-    val catalogTable = sparkSession.sessionState.catalog.getTableMetadata(tableIdentifier)
-    val fields = catalogTable.schema.fields.filterNot { field =>
-      dropCols.get.exists { col =>
-        col.getColumnName.equalsIgnoreCase(field.name)
-      }
-    }
-    alterSchema(new StructType(fields), catalogTable, tableIdentifier)
-  }
-
-  override def alterColumnChangeDataTypeOrRename(tableIdentifier: TableIdentifier,
-      schemaParts: String,
-      columns: Option[Seq[ColumnSchema]]): Unit = {
-    val catalogTable = sparkSession.sessionState.catalog.getTableMetadata(tableIdentifier)
-    val a = catalogTable.schema.fields.flatMap { field =>
-      columns.get.map { col =>
-        if (col.getColumnName.equalsIgnoreCase(field.name)) {
-          StructField(col.getColumnName,
-            CarbonSparkDataSourceUtil.convertCarbonToSparkDataType(col.getDataType))
-        } else {
-          field
-        }
-      }
-    }
-    alterSchema(new StructType(a), catalogTable, tableIdentifier)
-  }
-
-  private def alterSchema(structType: StructType,
-      catalogTable: CatalogTable,
-      tableIdentifier: TableIdentifier): Unit = {
-    val copy = catalogTable.copy(schema = structType)
-    sparkSession.sessionState.catalog.alterTable(copy)
-    sparkSession.sessionState.catalog.refreshTable(tableIdentifier)
-  }
-
-  lazy val carbonEnv = {
-    val env = new CarbonEnv
-    env.init(sparkSession)
-    env
-  }
-
-  def getCarbonEnv() : CarbonEnv = {
-    carbonEnv
-  }
-
-  // Initialize all listeners to the Operation bus.
-  CarbonEnv.init
-
-  def getThriftTableInfo(tablePath: String): TableInfo = {
-    val tableMetadataFile = CarbonTablePath.getSchemaFilePath(tablePath)
-    CarbonUtil.readSchemaFile(tableMetadataFile)
-  }
-
-  override def lookupRelation(name: TableIdentifier): LogicalPlan = {
-    var rtnRelation = super.lookupRelation(name)
-    val isRelationRefreshed =
-      CarbonSessionUtil.refreshRelationAndSetStats(rtnRelation, name)(sparkSession)
-    if (isRelationRefreshed) {
-      rtnRelation = super.lookupRelation(name)
-      // Reset the stats after lookup.
-      CarbonSessionUtil.refreshRelationAndSetStats(rtnRelation, name)(sparkSession)
-    }
-    rtnRelation
-  }
-
-
-  override def getCachedPlan(t: QualifiedTableName,
-      c: Callable[LogicalPlan]): LogicalPlan = {
-    val plan = super.getCachedPlan(t, c)
-    CarbonSessionUtil.updateCachedPlan(plan)
-  }
-
-  /**
-   * returns hive client from HiveExternalCatalog
-   *
-   * @return
-   */
-  def getClient(): org.apache.spark.sql.hive.client.HiveClient = {
-    null
-  }
-
-  override def createPartitions(
-      tableName: TableIdentifier,
-      parts: Seq[CatalogTablePartition],
-      ignoreIfExists: Boolean): Unit = {
-    try {
-      val table = CarbonEnv.getCarbonTable(tableName)(sparkSession)
-      val updatedParts = CarbonScalaUtil.updatePartitions(parts, table)
-      super.createPartitions(tableName, updatedParts, ignoreIfExists)
-    } catch {
-      case e: Exception =>
-        super.createPartitions(tableName, parts, ignoreIfExists)
-    }
-  }
-
-  /**
-   * This is alternate way of getting partition information. It first fetches all partitions from
-   * hive and then apply filter instead of querying hive along with filters.
-   * @param partitionFilters
-   * @param sparkSession
-   * @param identifier
-   * @return
-   */
-  override def getPartitionsAlternate(partitionFilters: Seq[Expression],
-      sparkSession: SparkSession,
-      identifier: TableIdentifier) = {
-    CarbonSessionUtil.prunePartitionsByFilter(partitionFilters, sparkSession, identifier)
-  }
-
-  /**
-   * Update the storageformat with new location information
-   */
-  override def updateStorageLocation(
-      path: Path,
-      storage: CatalogStorageFormat,
-      newTableName: String,
-      dbName: String): CatalogStorageFormat = {
-    storage.copy(locationUri = Some(path.toUri))
-  }
-}
-
-class CarbonInMemorySessionStateBuilder (sparkSession: SparkSession,
-    parentState: Option[SessionState] = None)
-  extends SessionStateBuilder(sparkSession, parentState) {
-
-  override lazy val sqlParser: ParserInterface = new CarbonSparkSqlParser(conf, sparkSession)
-
-  experimentalMethods.extraStrategies =
-    Seq(new StreamingTableStrategy(sparkSession),
-      new CarbonLateDecodeStrategy,
-      new DDLStrategy(sparkSession)
-    )
-  experimentalMethods.extraOptimizations = Seq(new CarbonIUDRule,
-    new CarbonUDFTransformRule,
-    new CarbonLateDecodeRule)
-
-  /**
-   * Internal catalog for managing table and database states.
-   */
-  override protected lazy val catalog: InMemorySessionCatalog = {
-    val catalog = new InMemorySessionCatalog(
-      externalCatalog,
-      session.sharedState.globalTempViewManager,
-      functionRegistry,
-      sparkSession,
-      conf,
-      SessionState.newHadoopConf(session.sparkContext.hadoopConfiguration, conf),
-      sqlParser,
-      resourceLoader)
-    parentState.foreach(_.catalog.copyStateTo(catalog))
-    catalog
-  }
-
-  private def externalCatalog: ExternalCatalog =
-    session.sharedState.externalCatalog.asInstanceOf[ExternalCatalog]
-
-  override protected lazy val resourceLoader: SessionResourceLoader = {
-    new SessionResourceLoader(session)
-  }
-
-  override lazy val optimizer: Optimizer = new CarbonOptimizer(catalog, conf, experimentalMethods)
-
-  override protected def analyzer: Analyzer = {
-    new CarbonAnalyzer(catalog,
-      conf,
-      sparkSession,
-      getAnalyzer(super.analyzer))
-  }
-
-  /**
-   * This method adds carbon rules to Hive Analyzer and returns new analyzer
-   *
-   * @param analyzer SessionStateBuilder analyzer
-   * @return
-   */
-  def getAnalyzer(analyzer: Analyzer): Analyzer = {
-    new Analyzer(catalog, conf) {
-
-      override val extendedResolutionRules: Seq[Rule[LogicalPlan]] =
-        analyzer.extendedResolutionRules ++
-        Seq(CarbonIUDAnalysisRule(sparkSession)) ++
-        Seq(CarbonPreInsertionCasts(sparkSession)) ++ customResolutionRules
-
-      override val extendedCheckRules: Seq[LogicalPlan => Unit] =
-        analyzer.extendedCheckRules
-
-      override val postHocResolutionRules: Seq[Rule[LogicalPlan]] =
-        analyzer.postHocResolutionRules
-    }
-  }
-
-  override protected def newBuilder: NewBuilder = new CarbonInMemorySessionStateBuilder(_, _)
-}
-
diff --git a/integration/spark2/src/main/commonTo2.2And2.3/org/apache/spark/sql/hive/CarbonOptimizerUtil.scala b/integration/spark2/src/main/commonTo2.2And2.3/org/apache/spark/sql/hive/CarbonOptimizerUtil.scala
index 72d3ae2..054da4b 100644
--- a/integration/spark2/src/main/commonTo2.2And2.3/org/apache/spark/sql/hive/CarbonOptimizerUtil.scala
+++ b/integration/spark2/src/main/commonTo2.2And2.3/org/apache/spark/sql/hive/CarbonOptimizerUtil.scala
@@ -41,4 +41,4 @@ object CarbonOptimizerUtil {
     }
     transFormedPlan
   }
-}
\ No newline at end of file
+}
diff --git a/integration/spark2/src/main/commonTo2.2And2.3/org/apache/spark/sql/hive/CarbonSessionState.scala b/integration/spark2/src/main/commonTo2.2And2.3/org/apache/spark/sql/hive/CarbonSessionState.scala
index f78c785..4755153 100644
--- a/integration/spark2/src/main/commonTo2.2And2.3/org/apache/spark/sql/hive/CarbonSessionState.scala
+++ b/integration/spark2/src/main/commonTo2.2And2.3/org/apache/spark/sql/hive/CarbonSessionState.scala
@@ -18,90 +18,73 @@ package org.apache.spark.sql.hive
 
 import java.util.concurrent.Callable
 
-import org.apache.hadoop.conf.Configuration
 import org.apache.hadoop.fs.Path
+
 import org.apache.spark.sql._
 import org.apache.spark.sql.catalyst.{QualifiedTableName, TableIdentifier}
-import org.apache.spark.sql.catalyst.analysis.{Analyzer, FunctionRegistry}
+import org.apache.spark.sql.catalyst.analysis.Analyzer
 import org.apache.spark.sql.catalyst.catalog._
 import org.apache.spark.sql.catalyst.expressions.Expression
-import org.apache.spark.sql.catalyst.optimizer.Optimizer
-import org.apache.spark.sql.catalyst.parser.ParserInterface
-import org.apache.spark.sql.catalyst.plans.logical.{LogicalPlan, SubqueryAlias}
-import org.apache.spark.sql.catalyst.rules.Rule
-import org.apache.spark.sql.execution.datasources.{FindDataSourceTable, PreWriteCheck, ResolveSQLOnFile, _}
-import org.apache.spark.sql.execution.strategy.{CarbonLateDecodeStrategy, DDLStrategy, StreamingTableStrategy}
-import org.apache.spark.sql.hive.client.HiveClient
-import org.apache.spark.sql.internal.{SQLConf, SessionState}
-import org.apache.spark.sql.optimizer.{CarbonIUDRule, CarbonLateDecodeRule, CarbonUDFTransformRule}
-import org.apache.spark.sql.parser.CarbonSparkSqlParser
+import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
+import org.apache.spark.sql.internal.SessionState
 
 import org.apache.carbondata.core.metadata.schema.table.column.ColumnSchema
 import org.apache.carbondata.spark.util.CarbonScalaUtil
+import org.apache.spark.sql.catalyst.optimizer.Optimizer
 
-/**
- * This class will have carbon catalog and refresh the relation from cache if the carbontable in
- * carbon catalog is not same as cached carbon relation's carbon table
- *
- * @param externalCatalog
- * @param globalTempViewManager
- * @param sparkSession
- * @param functionResourceLoader
- * @param functionRegistry
- * @param conf
- * @param hadoopConf
- */
-class CarbonHiveSessionCatalog(
-    externalCatalog: HiveExternalCatalog,
-    globalTempViewManager: GlobalTempViewManager,
-    functionRegistry: FunctionRegistry,
-    sparkSession: SparkSession,
-    conf: SQLConf,
-    hadoopConf: Configuration,
-    parser: ParserInterface,
-    functionResourceLoader: FunctionResourceLoader)
-  extends HiveSessionCatalog (
-    externalCatalog,
-    globalTempViewManager,
-    new HiveMetastoreCatalog(sparkSession),
-    functionRegistry,
-    conf,
-    hadoopConf,
-    parser,
-    functionResourceLoader
-  ) with CarbonSessionCatalog {
-
-  private lazy val carbonEnv = {
-    val env = new CarbonEnv
-    env.init(sparkSession)
-    env
-  }
-  /**
-   * return's the carbonEnv instance
-   * @return
-   */
-  override def getCarbonEnv() : CarbonEnv = {
-    carbonEnv
-  }
-
-  // Initialize all listeners to the Operation bus.
-  CarbonEnv.init
+object CarbonSessionCatalogUtil {
 
-  override def lookupRelation(name: TableIdentifier): LogicalPlan = {
-    var rtnRelation = super.lookupRelation(name)
+  def lookupRelation(name: TableIdentifier, sparkSession: SparkSession): LogicalPlan = {
+    var rtnRelation = sparkSession.sessionState.catalog.lookupRelation(name)
     val isRelationRefreshed =
       CarbonSessionUtil.refreshRelationAndSetStats(rtnRelation, name)(sparkSession)
     if (isRelationRefreshed) {
-      rtnRelation = super.lookupRelation(name)
+      rtnRelation = sparkSession.sessionState.catalog.lookupRelation(name)
       // Reset the stats after lookup.
       CarbonSessionUtil.refreshRelationAndSetStats(rtnRelation, name)(sparkSession)
     }
     rtnRelation
   }
 
-  override def getCachedPlan(t: QualifiedTableName,
-      c: Callable[LogicalPlan]): LogicalPlan = {
-    val plan = super.getCachedPlan(t, c)
+  /**
+   * Method used to update the table name
+   * @param oldTableIdentifier old table identifier
+   * @param newTableIdentifier new table identifier
+   * @param newTablePath new table path
+   */
+  def alterTableRename(oldTableIdentifier: TableIdentifier,
+                       newTableIdentifier: TableIdentifier,
+                       newTablePath: String,
+                       sparkSession: SparkSession): Unit = {
+    getClient(sparkSession).runSqlHive(
+      s"ALTER TABLE ${ oldTableIdentifier.database.get }.${ oldTableIdentifier.table } " +
+        s"RENAME TO ${ oldTableIdentifier.database.get }.${ newTableIdentifier.table }")
+    getClient(sparkSession).runSqlHive(
+      s"ALTER TABLE ${ oldTableIdentifier.database.get }.${ newTableIdentifier.table } " +
+        s"SET SERDEPROPERTIES" +
+        s"('tableName'='${ newTableIdentifier.table }', " +
+        s"'dbName'='${ oldTableIdentifier.database.get }', 'tablePath'='${ newTablePath }')")
+  }
+
+  /**
+   * Below method will be used to update serd properties
+   * @param tableIdentifier table identifier
+   * @param schemaParts schema parts
+   * @param cols cols
+   */
+  def alterTable(tableIdentifier: TableIdentifier,
+                 schemaParts: String,
+                 cols: Option[Seq[ColumnSchema]],
+                 sparkSession: SparkSession): Unit = {
+    getClient(sparkSession)
+      .runSqlHive(s"ALTER TABLE ${ tableIdentifier.database.get }.${ tableIdentifier.table } " +
+        s"SET TBLPROPERTIES(${ schemaParts })")
+  }
+
+
+  def getCachedPlan(t: QualifiedTableName,
+      c: Callable[LogicalPlan], sparkSession: SparkSession): LogicalPlan = {
+    val plan = sparkSession.sessionState.catalog.getCachedPlan(t, c)
     CarbonSessionUtil.updateCachedPlan(plan)
   }
 
@@ -110,27 +93,27 @@ class CarbonHiveSessionCatalog(
    *
    * @return
    */
-  override def getClient(): org.apache.spark.sql.hive.client.HiveClient = {
-    sparkSession.asInstanceOf[CarbonSession].sharedState.externalCatalog
+  def getClient(sparkSession: SparkSession): org.apache.spark.sql.hive.client.HiveClient = {
+    sparkSession.sharedState.externalCatalog
       .asInstanceOf[HiveExternalCatalog].client
   }
 
-  override def alterAddColumns(tableIdentifier: TableIdentifier,
+  def alterAddColumns(tableIdentifier: TableIdentifier,
       schemaParts: String,
-      cols: Option[Seq[ColumnSchema]]): Unit = {
-    updateCatalogTableForAlter(tableIdentifier, schemaParts, cols)
+      cols: Option[Seq[ColumnSchema]], sparkSession: SparkSession): Unit = {
+    updateCatalogTableForAlter(tableIdentifier, schemaParts, cols, sparkSession)
   }
 
-  override def alterDropColumns(tableIdentifier: TableIdentifier,
+  def alterDropColumns(tableIdentifier: TableIdentifier,
       schemaParts: String,
-      cols: Option[Seq[ColumnSchema]]): Unit = {
-    updateCatalogTableForAlter(tableIdentifier, schemaParts, cols)
+      cols: Option[Seq[ColumnSchema]], sparkSession: SparkSession): Unit = {
+    updateCatalogTableForAlter(tableIdentifier, schemaParts, cols, sparkSession)
   }
 
-  override def alterColumnChangeDataTypeOrRename(tableIdentifier: TableIdentifier,
+  def alterColumnChangeDataTypeOrRename(tableIdentifier: TableIdentifier,
       schemaParts: String,
-      cols: Option[Seq[ColumnSchema]]): Unit = {
-    updateCatalogTableForAlter(tableIdentifier, schemaParts, cols)
+      cols: Option[Seq[ColumnSchema]], sparkSession: SparkSession): Unit = {
+    updateCatalogTableForAlter(tableIdentifier, schemaParts, cols, sparkSession)
   }
 
   /**
@@ -143,8 +126,8 @@ class CarbonHiveSessionCatalog(
    */
   private def updateCatalogTableForAlter(tableIdentifier: TableIdentifier,
       schemaParts: String,
-      cols: Option[Seq[ColumnSchema]]): Unit = {
-    alterTable(tableIdentifier, schemaParts, cols)
+      cols: Option[Seq[ColumnSchema]], sparkSession: SparkSession): Unit = {
+    alterTable(tableIdentifier, schemaParts, cols, sparkSession)
     CarbonSessionUtil
       .alterExternalCatalogForTableWithUpdatedSchema(tableIdentifier,
         cols,
@@ -152,17 +135,17 @@ class CarbonHiveSessionCatalog(
         sparkSession)
   }
 
-  override def createPartitions(
+  def createPartitions(
       tableName: TableIdentifier,
       parts: Seq[CatalogTablePartition],
-      ignoreIfExists: Boolean): Unit = {
+      ignoreIfExists: Boolean, sparkSession: SparkSession): Unit = {
     try {
       val table = CarbonEnv.getCarbonTable(tableName)(sparkSession)
       val updatedParts = CarbonScalaUtil.updatePartitions(parts, table)
-      super.createPartitions(tableName, updatedParts, ignoreIfExists)
+      sparkSession.sessionState.catalog.createPartitions(tableName, updatedParts, ignoreIfExists)
     } catch {
       case e: Exception =>
-        super.createPartitions(tableName, parts, ignoreIfExists)
+        sparkSession.sessionState.catalog.createPartitions(tableName, parts, ignoreIfExists)
     }
   }
 
@@ -174,7 +157,7 @@ class CarbonHiveSessionCatalog(
    * @param identifier
    * @return
    */
-  override def getPartitionsAlternate(partitionFilters: Seq[Expression],
+  def getPartitionsAlternate(partitionFilters: Seq[Expression],
       sparkSession: SparkSession,
       identifier: TableIdentifier) = {
     CarbonSessionUtil.prunePartitionsByFilter(partitionFilters, sparkSession, identifier)
@@ -183,7 +166,7 @@ class CarbonHiveSessionCatalog(
   /**
    * Update the storageformat with new location information
    */
-  override def updateStorageLocation(
+  def updateStorageLocation(
       path: Path,
       storage: CatalogStorageFormat,
       newTableName: String,
@@ -192,86 +175,22 @@ class CarbonHiveSessionCatalog(
   }
 }
 
+
 /**
  * Session state implementation to override sql parser and adding strategies
  *
  * @param sparkSession
  */
 class CarbonSessionStateBuilder(sparkSession: SparkSession,
-    parentState: Option[SessionState] = None)
+                                parentState: Option[SessionState] = None)
   extends HiveSessionStateBuilder(sparkSession, parentState) {
 
-  override lazy val sqlParser: ParserInterface = new CarbonSparkSqlParser(conf, sparkSession)
-
-  experimentalMethods.extraStrategies =
-    Seq(new StreamingTableStrategy(sparkSession),
-        new CarbonLateDecodeStrategy,
-        new DDLStrategy(sparkSession)
-    )
-  experimentalMethods.extraOptimizations = Seq(new CarbonIUDRule,
-    new CarbonUDFTransformRule,
-    new CarbonLateDecodeRule)
-
-  /**
-   * Internal catalog for managing table and database states.
-   */
-  /**
-   * Create a [[CarbonSessionStateBuilder]].
-   */
-  override protected lazy val catalog: CarbonHiveSessionCatalog = {
-    val catalog = new CarbonHiveSessionCatalog(
-      externalCatalog,
-      session.sharedState.globalTempViewManager,
-      functionRegistry,
-      sparkSession,
-      conf,
-      SessionState.newHadoopConf(session.sparkContext.hadoopConfiguration, conf),
-      sqlParser,
-      resourceLoader)
-    parentState.foreach(_.catalog.copyStateTo(catalog))
-    catalog
-  }
-
-  private def externalCatalog: HiveExternalCatalog =
-    session.sharedState.externalCatalog.asInstanceOf[HiveExternalCatalog]
-
-  /**
-   * Create a Hive aware resource loader.
-   */
-  override protected lazy val resourceLoader: HiveSessionResourceLoader = {
-    val client: HiveClient = externalCatalog.client.newSession()
-    new HiveSessionResourceLoader(session, client)
-  }
-
   override lazy val optimizer: Optimizer = new CarbonOptimizer(catalog, conf, experimentalMethods)
 
   override protected def analyzer: Analyzer = {
     new CarbonAnalyzer(catalog,
       conf,
       sparkSession,
-      getAnalyzer(super.analyzer))
-  }
-
-  /**
-   * This method adds carbon rules to Hive Analyzer and returns new analyzer
-   * @param analyzer hiveSessionStateBuilder analyzer
-   * @return
-   */
-  def getAnalyzer(analyzer: Analyzer): Analyzer = {
-    new Analyzer(catalog, conf) {
-
-      override val extendedResolutionRules: Seq[Rule[LogicalPlan]] =
-        analyzer.extendedResolutionRules ++
-        Seq(CarbonIUDAnalysisRule(sparkSession)) ++
-        Seq(CarbonPreInsertionCasts(sparkSession)) ++ customResolutionRules
-
-      override val extendedCheckRules: Seq[LogicalPlan => Unit] =
-        analyzer.extendedCheckRules
-
-      override val postHocResolutionRules: Seq[Rule[LogicalPlan]] =
-        analyzer.postHocResolutionRules
-    }
+      super.analyzer)
   }
-
-  override protected def newBuilder: NewBuilder = new CarbonSessionStateBuilder(_, _)
-}
\ No newline at end of file
+}
diff --git a/integration/spark2/src/main/scala/org/apache/carbondata/indexserver/IndexServer.scala b/integration/spark2/src/main/scala/org/apache/carbondata/indexserver/IndexServer.scala
index b1d0e43..2bd6c11 100644
--- a/integration/spark2/src/main/scala/org/apache/carbondata/indexserver/IndexServer.scala
+++ b/integration/spark2/src/main/scala/org/apache/carbondata/indexserver/IndexServer.scala
@@ -31,7 +31,7 @@ import org.apache.hadoop.security.{KerberosInfo, UserGroupInformation}
 import org.apache.hadoop.security.authorize.{PolicyProvider, Service}
 import org.apache.spark.SparkConf
 import org.apache.spark.scheduler.{SparkListener, SparkListenerApplicationEnd}
-import org.apache.spark.sql.{CarbonSession, SparkSession}
+import org.apache.spark.sql.{CarbonEnv, SparkSession}
 import org.apache.spark.sql.util.SparkSQLUtil
 
 import org.apache.carbondata.common.logging.LogServiceFactory
@@ -246,12 +246,14 @@ object IndexServer extends ServerInterface {
   }
 
   private def createCarbonSession(): SparkSession = {
-    import org.apache.spark.sql.CarbonSession._
     val spark = SparkSession
       .builder().config(new SparkConf())
       .appName("DistributedIndexServer")
       .enableHiveSupport()
-      .getOrCreateCarbonSession(CarbonProperties.getStorePath)
+      .config("spark.sql.extensions", "org.apache.spark.sql.CarbonExtensions")
+      .getOrCreate()
+    CarbonEnv.getInstance(spark)
+
     SparkSession.setActiveSession(spark)
     SparkSession.setDefaultSession(spark)
     if (spark.sparkContext.getConf
diff --git a/integration/spark2/src/main/scala/org/apache/carbondata/spark/thriftserver/CarbonThriftServer.scala b/integration/spark2/src/main/scala/org/apache/carbondata/spark/thriftserver/CarbonThriftServer.scala
index e268e5d..ece9319 100644
--- a/integration/spark2/src/main/scala/org/apache/carbondata/spark/thriftserver/CarbonThriftServer.scala
+++ b/integration/spark2/src/main/scala/org/apache/carbondata/spark/thriftserver/CarbonThriftServer.scala
@@ -19,14 +19,12 @@ package org.apache.carbondata.spark.thriftserver
 
 import java.io.File
 
-import org.apache.hadoop.fs.s3a.Constants.{ACCESS_KEY, ENDPOINT, SECRET_KEY}
 import org.apache.spark.SparkConf
-import org.apache.spark.sql.SparkSession
+import org.apache.spark.sql.{CarbonEnv, SparkSession}
 import org.apache.spark.sql.hive.thriftserver.HiveThriftServer2
 import org.slf4j.{Logger, LoggerFactory}
 
 import org.apache.carbondata.common.logging.LogServiceFactory
-import org.apache.carbondata.core.constants.CarbonCommonConstants
 import org.apache.carbondata.core.util.CarbonProperties
 import org.apache.carbondata.spark.util.CarbonSparkUtil
 
@@ -39,7 +37,7 @@ object CarbonThriftServer {
 
   def main(args: Array[String]): Unit = {
 
-    import org.apache.spark.sql.CarbonSession._
+    import org.apache.spark.sql.CarbonUtils._
 
     val sparkConf = new SparkConf(loadDefaults = true)
 
@@ -54,6 +52,7 @@ object CarbonThriftServer {
       .config(sparkConf)
       .appName("Carbon Thrift Server(uses CarbonSession)")
       .enableHiveSupport()
+      .config("spark.sql.extensions", "org.apache.spark.sql.CarbonExtensions")
 
     if (!sparkConf.contains("carbon.properties.filepath")) {
       val sparkHome = System.getenv.get("SPARK_HOME")
@@ -71,14 +70,15 @@ object CarbonThriftServer {
     val storePath = if (args.length > 0) args.head else null
 
     val spark = if (args.length <= 1) {
-      builder.getOrCreateCarbonSession(storePath)
+      builder.getOrCreate()
     } else {
       val (accessKey, secretKey, endpoint) = CarbonSparkUtil.getKeyOnPrefix(args(0))
       builder.config(accessKey, args(1))
         .config(secretKey, args(2))
         .config(endpoint, CarbonSparkUtil.getS3EndPoint(args))
-        .getOrCreateCarbonSession(storePath)
+        .getOrCreate()
     }
+    CarbonEnv.getInstance(spark)
 
     val warmUpTime = CarbonProperties.getInstance().getProperty("carbon.spark.warmUpTime", "5000")
     try {
diff --git a/integration/spark2/src/main/scala/org/apache/carbondata/store/SparkCarbonStore.scala b/integration/spark2/src/main/scala/org/apache/carbondata/store/SparkCarbonStore.scala
index 8a67356..7c3b663 100644
--- a/integration/spark2/src/main/scala/org/apache/carbondata/store/SparkCarbonStore.scala
+++ b/integration/spark2/src/main/scala/org/apache/carbondata/store/SparkCarbonStore.scala
@@ -23,7 +23,6 @@ import scala.collection.JavaConverters._
 
 import org.apache.spark.{CarbonInputMetrics, SparkConf}
 import org.apache.spark.sql.{CarbonEnv, SparkSession}
-import org.apache.spark.sql.CarbonSession._
 
 import org.apache.carbondata.common.annotations.InterfaceAudience
 import org.apache.carbondata.core.datamap.DataMapFilter
@@ -53,7 +52,9 @@ class SparkCarbonStore extends MetaCachedCarbonStore {
       .config(sparkConf)
       .appName("SparkCarbonStore-" + storeName)
       .config("spark.sql.warehouse.dir", storeLocation)
-      .getOrCreateCarbonSession()
+      .config("spark.sql.extensions", "org.apache.spark.sql.CarbonExtensions")
+      .getOrCreate()
+    CarbonEnv.getInstance(session)
   }
 
   def this(sparkSession: SparkSession) = {
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonDatasourceHadoopRelation.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonDatasourceHadoopRelation.scala
index 0a1c0bd..7b7a411 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonDatasourceHadoopRelation.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonDatasourceHadoopRelation.scala
@@ -54,7 +54,7 @@ case class CarbonDatasourceHadoopRelation(
     paths.head,
     CarbonEnv.getDatabaseName(caseInsensitiveMap.get("dbname"))(sparkSession),
     caseInsensitiveMap("tablename"))
-  CarbonSession.updateSessionInfoToCurrentThread(sparkSession)
+  CarbonUtils.updateSessionInfoToCurrentThread(sparkSession)
 
   @transient lazy val carbonRelation: CarbonRelation =
     CarbonEnv.getInstance(sparkSession).carbonMetaStore.
@@ -168,7 +168,7 @@ case class CarbonDatasourceHadoopRelation(
       requiredColumns.foreach(projection.addColumn)
     }
 
-    CarbonSession.threadUnset(CarbonCommonConstants.SUPPORT_DIRECT_QUERY_ON_DATAMAP)
+    CarbonUtils.threadUnset(CarbonCommonConstants.SUPPORT_DIRECT_QUERY_ON_DATAMAP)
     val inputMetricsStats: CarbonInputMetrics = new CarbonInputMetrics
     new CarbonScanRDD(
       sparkSession,
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonEnv.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonEnv.scala
index 571008f..6afee71 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonEnv.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonEnv.scala
@@ -166,6 +166,9 @@ class CarbonEnv {
   }
 }
 
+/**
+ * @Deprecated
+ */
 object CarbonEnv {
 
   lazy val MV_SKIP_RULE_UDF = "mv"
@@ -175,9 +178,6 @@ object CarbonEnv {
   val LOGGER = LogServiceFactory.getLogService(this.getClass.getName)
 
   def getInstance(sparkSession: SparkSession): CarbonEnv = {
-    if (sparkSession.isInstanceOf[CarbonSession]) {
-      sparkSession.sessionState.catalog.asInstanceOf[CarbonSessionCatalog].getCarbonEnv
-    } else {
       var carbonEnv: CarbonEnv = carbonEnvMap.get(sparkSession)
       if (carbonEnv == null) {
         carbonEnv = new CarbonEnv
@@ -185,7 +185,6 @@ object CarbonEnv {
         carbonEnvMap.put(sparkSession, carbonEnv)
       }
       carbonEnv
-    }
   }
 
   /**
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonExtensions.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonExtensions.scala
new file mode 100644
index 0000000..a25c19c
--- /dev/null
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonExtensions.scala
@@ -0,0 +1,99 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.sql
+
+import org.apache.spark.sql.catalyst.parser.ParserInterface
+import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
+import org.apache.spark.sql.catalyst.rules.Rule
+import org.apache.spark.sql.execution.strategy.{CarbonLateDecodeStrategy, DDLStrategy, StreamingTableStrategy}
+import org.apache.spark.sql.hive.{CarbonIUDAnalysisRule, CarbonPreInsertionCasts}
+import org.apache.spark.sql.optimizer.{CarbonIUDRule, CarbonLateDecodeRule, CarbonUDFTransformRule}
+import org.apache.spark.sql.parser.CarbonSparkSqlParser
+import org.apache.spark.util.CarbonReflectionUtils
+
+class CarbonExtensions extends ((SparkSessionExtensions) => Unit) {
+
+  CarbonExtensions
+
+  override def apply(extensions: SparkSessionExtensions): Unit = {
+    // Carbon parser
+    extensions
+      .injectParser((sparkSession: SparkSession, _: ParserInterface) =>
+        new CarbonSparkSqlParser(new SQLConf, sparkSession))
+
+    // carbon analyzer rules
+    extensions
+      .injectResolutionRule((session: SparkSession) => CarbonIUDAnalysisRule(session))
+    extensions
+      .injectResolutionRule((session: SparkSession) => CarbonPreInsertionCasts(session))
+
+    // Carbon Pre optimization rules
+    // TODO: Make CarbonOptimizerRule injectable Rule
+    val optimizerRules = Seq(new CarbonIUDRule,
+      new CarbonUDFTransformRule, new CarbonLateDecodeRule)
+    extensions
+      .injectResolutionRule((sparkSession: SparkSession) => {
+        CarbonUDFTransformRuleWrapper(sparkSession, optimizerRules)
+      })
+
+    // TODO: CarbonPreAggregateDataLoadingRules
+    // TODO: CarbonPreAggregateQueryRules
+    // TODO: MVAnalyzerRule
+
+    // carbon planner strategies
+    var streamingTableStratergy : StreamingTableStrategy = null
+    val decodeStrategy = new CarbonLateDecodeStrategy
+    var ddlStrategy : DDLStrategy = null
+
+    extensions
+      .injectPlannerStrategy((session: SparkSession) => {
+        if (streamingTableStratergy == null) {
+          streamingTableStratergy = new StreamingTableStrategy(session)
+        }
+        streamingTableStratergy
+      })
+
+    extensions
+      .injectPlannerStrategy((_: SparkSession) => decodeStrategy)
+
+    extensions
+      .injectPlannerStrategy((sparkSession: SparkSession) => {
+        if (ddlStrategy == null) {
+          ddlStrategy = new DDLStrategy(sparkSession)
+        }
+        ddlStrategy
+      })
+  }
+}
+
+object CarbonExtensions {
+  CarbonEnv.init
+  CarbonReflectionUtils.updateCarbonSerdeInfo
+}
+
+case class CarbonUDFTransformRuleWrapper(session: SparkSession,
+                                         rules: Seq[Rule[LogicalPlan]])
+  extends Rule[LogicalPlan] {
+
+  override def apply(plan: LogicalPlan): LogicalPlan = {
+    if (session.sessionState.experimentalMethods.extraOptimizations.isEmpty) {
+      session.sessionState.experimentalMethods.extraOptimizations = rules
+    }
+  plan
+}
+}
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonSession.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonSession.scala
index 063eaf5..8cf6918 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonSession.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonSession.scala
@@ -19,8 +19,6 @@ package org.apache.spark.sql
 import java.io.File
 import java.util.concurrent.atomic.AtomicLong
 
-import scala.collection.JavaConverters._
-
 import org.apache.commons.lang.StringUtils
 import org.apache.hadoop.conf.Configuration
 import org.apache.spark.{SparkConf, SparkContext}
@@ -29,14 +27,13 @@ import org.apache.spark.sql.catalyst.encoders.RowEncoder
 import org.apache.spark.sql.catalyst.plans.logical._
 import org.apache.spark.sql.execution.QueryExecution
 import org.apache.spark.sql.execution.command.mutation.merge.MergeDataSetBuilder
-import org.apache.spark.sql.hive.execution.command.CarbonSetCommand
-import org.apache.spark.sql.internal.{SessionState, SharedState}
+import org.apache.spark.sql.internal.{SessionState, SharedState, StaticSQLConf}
 import org.apache.spark.sql.profiler.{Profiler, SQLStart}
 import org.apache.spark.util.{CarbonReflectionUtils, Utils}
 
 import org.apache.carbondata.common.annotations.InterfaceAudience
 import org.apache.carbondata.core.constants.CarbonCommonConstants
-import org.apache.carbondata.core.util.{CarbonProperties, CarbonSessionInfo, ThreadLocalSessionInfo}
+import org.apache.carbondata.core.util.CarbonProperties
 import org.apache.carbondata.streaming.CarbonStreamingQueryListener
 
 /**
@@ -239,6 +236,7 @@ object CarbonSession {
           if (!sparkConf.contains("spark.app.name")) {
             sparkConf.setAppName(randomAppName)
           }
+          sparkConf.set("spark.sql.extensions", "org.apache.spark.sql.CarbonExtensions")
           val sc = SparkContext.getOrCreate(sparkConf)
           // maybe this is an existing SparkContext, update its SparkConf which maybe used
           // by SparkSession
@@ -249,7 +247,30 @@ object CarbonSession {
           sc
         }
 
+        // Initialize extensions if the user has defined a configurator class.
+        val extensionConfOption = sparkContext.conf.get(StaticSQLConf.SPARK_SESSION_EXTENSIONS)
+        val extensionInstance : SparkSessionExtensions = new SparkSessionExtensions
+        if (extensionConfOption.isDefined) {
+          val extensionConfClassName = extensionConfOption.get
+          try {
+            val extensionConfClass = Utils.classForName(extensionConfClassName)
+            val ex = extensionConfClass.newInstance()
+              .asInstanceOf[(SparkSessionExtensions) => Unit]
+            ex(extensionInstance)
+
+          } catch {
+            // Ignore the error if we cannot find the class or when the class has the wrong type.
+            case e @ (_: ClassCastException |
+                      _: ClassNotFoundException |
+                      _: NoClassDefFoundError) =>
+              // Ignore extensions
+          }
+        }
+
         session = new CarbonSession(sparkContext, None, !enableInMemCatlog)
+
+        CarbonReflectionUtils.setSuperFieldToClass(session, "extensions", extensionInstance)
+
         val carbonProperties = CarbonProperties.getInstance()
         if (StringUtils.isNotBlank(storePath)) {
           carbonProperties.addProperty(CarbonCommonConstants.STORE_LOCATION, storePath)
@@ -293,58 +314,4 @@ object CarbonSession {
       new MergeDataSetBuilder(ds, srcDS, expr, ds.sparkSession)
     }
   }
-
-  def threadSet(key: String, value: String): Unit = {
-    var currentThreadSessionInfo = ThreadLocalSessionInfo.getCarbonSessionInfo
-    if (currentThreadSessionInfo == null) {
-      currentThreadSessionInfo = new CarbonSessionInfo()
-    }
-    else {
-      currentThreadSessionInfo = currentThreadSessionInfo.clone()
-    }
-    val threadParams = currentThreadSessionInfo.getThreadParams
-    CarbonSetCommand.validateAndSetValue(threadParams, key, value)
-    ThreadLocalSessionInfo.setCarbonSessionInfo(currentThreadSessionInfo)
-  }
-
-
-  def threadSet(key: String, value: Object): Unit = {
-    var currentThreadSessionInfo = ThreadLocalSessionInfo.getCarbonSessionInfo
-    if (currentThreadSessionInfo == null) {
-      currentThreadSessionInfo = new CarbonSessionInfo()
-    }
-    else {
-      currentThreadSessionInfo = currentThreadSessionInfo.clone()
-    }
-    currentThreadSessionInfo.getThreadParams.setExtraInfo(key, value)
-    ThreadLocalSessionInfo.setCarbonSessionInfo(currentThreadSessionInfo)
-  }
-
-  def threadUnset(key: String): Unit = {
-    val currentThreadSessionInfo = ThreadLocalSessionInfo.getCarbonSessionInfo
-    if (currentThreadSessionInfo != null) {
-      val currentThreadSessionInfoClone = currentThreadSessionInfo.clone()
-      val threadParams = currentThreadSessionInfoClone.getThreadParams
-      CarbonSetCommand.unsetValue(threadParams, key)
-      threadParams.removeExtraInfo(key)
-      ThreadLocalSessionInfo.setCarbonSessionInfo(currentThreadSessionInfoClone)
-    }
-  }
-
-  def updateSessionInfoToCurrentThread(sparkSession: SparkSession): Unit = {
-    val carbonSessionInfo = CarbonEnv.getInstance(sparkSession).carbonSessionInfo.clone()
-    val currentThreadSessionInfoOrig = ThreadLocalSessionInfo.getCarbonSessionInfo
-    if (currentThreadSessionInfoOrig != null) {
-      val currentThreadSessionInfo = currentThreadSessionInfoOrig.clone()
-      // copy all the thread parameters to apply to session parameters
-      currentThreadSessionInfo.getThreadParams.getAll.asScala
-        .foreach(entry => carbonSessionInfo.getSessionParams.addProperty(entry._1, entry._2))
-      carbonSessionInfo.setThreadParams(currentThreadSessionInfo.getThreadParams)
-    }
-    // preserve thread parameters across call
-    ThreadLocalSessionInfo.setCarbonSessionInfo(carbonSessionInfo)
-    ThreadLocalSessionInfo
-      .setConfigurationToCurrentThread(sparkSession.sessionState.newHadoopConf())
-  }
-
 }
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonSource.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonSource.scala
index 376d121..cfe2449 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonSource.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonSource.scala
@@ -126,7 +126,7 @@ class CarbonSource extends CreatableRelationProvider with RelationProvider
       parameters: Map[String, String],
       dataSchema: StructType): BaseRelation = {
     CarbonEnv.getInstance(sqlContext.sparkSession)
-    addLateDecodeOptimization(sqlContext.sparkSession)
+    // addLateDecodeOptimization(sqlContext.sparkSession)
     val newParameters =
       CaseInsensitiveMap[String](CarbonScalaUtil.getDeserializedParameters(parameters))
     val dbName: String =
@@ -215,10 +215,12 @@ class CarbonSource extends CreatableRelationProvider with RelationProvider
     try {
       if (parameters.contains("tablePath")) {
         (parameters("tablePath"), parameters)
-      } else if (!sparkSession.isInstanceOf[CarbonSession]) {
-        (CarbonProperties.getStorePath + "/" + dbName + "/" + tableName, parameters)
       } else {
-        (CarbonEnv.getTablePath(Some(dbName), tableName)(sparkSession), parameters)
+        if ("default".equalsIgnoreCase(dbName)) {
+          (CarbonProperties.getStorePath + "/" + tableName, parameters)
+        } else {
+          (CarbonProperties.getStorePath + "/" + dbName + "/" + tableName, parameters)
+        }
       }
     } catch {
       case ex: Exception =>
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonUtils.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonUtils.scala
new file mode 100644
index 0000000..0327ad8
--- /dev/null
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/CarbonUtils.scala
@@ -0,0 +1,120 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.spark.sql
+
+import java.util.concurrent.atomic.AtomicLong
+
+import scala.collection.JavaConverters._
+
+import org.apache.spark.sql.catalyst.plans.logical._
+import org.apache.spark.sql.execution.QueryExecution
+import org.apache.spark.sql.hive.execution.command.CarbonSetCommand
+import org.apache.spark.sql.profiler.{Profiler, SQLStart}
+
+import org.apache.carbondata.core.util.{CarbonSessionInfo, ThreadLocalSessionInfo}
+
+object CarbonUtils {
+
+  private val statementId = new AtomicLong(0)
+
+  private[sql] val threadStatementId = new ThreadLocal[Long]
+
+  private def withProfiler(sparkSession: SparkSession,
+                            sqlText: String,
+                            generateDF: (QueryExecution, SQLStart) => DataFrame): DataFrame = {
+    val sse = SQLStart(sqlText, CarbonUtils.statementId.getAndIncrement())
+    CarbonUtils.threadStatementId.set(sse.statementId)
+    sse.startTime = System.currentTimeMillis()
+
+    try {
+      val logicalPlan = sparkSession.sessionState.sqlParser.parsePlan(sqlText)
+      sse.parseEnd = System.currentTimeMillis()
+
+      val qe = sparkSession.sessionState.executePlan(logicalPlan)
+      qe.assertAnalyzed()
+      sse.isCommand = qe.analyzed match {
+        case c: Command => true
+        case u @ Union(children) if children.forall(_.isInstanceOf[Command]) => true
+        case _ => false
+      }
+      sse.analyzerEnd = System.currentTimeMillis()
+      generateDF(qe, sse)
+    } finally {
+      Profiler.invokeIfEnable {
+        if (sse.isCommand) {
+          sse.endTime = System.currentTimeMillis()
+          Profiler.send(sse)
+        } else {
+          Profiler.addStatementMessage(sse.statementId, sse)
+        }
+      }
+    }
+  }
+
+  def threadSet(key: String, value: String): Unit = {
+    var currentThreadSessionInfo = ThreadLocalSessionInfo.getCarbonSessionInfo
+    if (currentThreadSessionInfo == null) {
+      currentThreadSessionInfo = new CarbonSessionInfo()
+    }
+    else {
+      currentThreadSessionInfo = currentThreadSessionInfo.clone()
+    }
+    val threadParams = currentThreadSessionInfo.getThreadParams
+    CarbonSetCommand.validateAndSetValue(threadParams, key, value)
+    ThreadLocalSessionInfo.setCarbonSessionInfo(currentThreadSessionInfo)
+  }
+
+
+  def threadSet(key: String, value: Object): Unit = {
+    var currentThreadSessionInfo = ThreadLocalSessionInfo.getCarbonSessionInfo
+    if (currentThreadSessionInfo == null) {
+      currentThreadSessionInfo = new CarbonSessionInfo()
+    }
+    else {
+      currentThreadSessionInfo = currentThreadSessionInfo.clone()
+    }
+    currentThreadSessionInfo.getThreadParams.setExtraInfo(key, value)
+    ThreadLocalSessionInfo.setCarbonSessionInfo(currentThreadSessionInfo)
+  }
+
+  def threadUnset(key: String): Unit = {
+    val currentThreadSessionInfo = ThreadLocalSessionInfo.getCarbonSessionInfo
+    if (currentThreadSessionInfo != null) {
+      val currentThreadSessionInfoClone = currentThreadSessionInfo.clone()
+      val threadParams = currentThreadSessionInfoClone.getThreadParams
+      CarbonSetCommand.unsetValue(threadParams, key)
+      threadParams.removeExtraInfo(key)
+      ThreadLocalSessionInfo.setCarbonSessionInfo(currentThreadSessionInfoClone)
+    }
+  }
+
+  def updateSessionInfoToCurrentThread(sparkSession: SparkSession): Unit = {
+    val carbonSessionInfo = CarbonEnv.getInstance(sparkSession).carbonSessionInfo.clone()
+    val currentThreadSessionInfoOrig = ThreadLocalSessionInfo.getCarbonSessionInfo
+    if (currentThreadSessionInfoOrig != null) {
+      val currentThreadSessionInfo = currentThreadSessionInfoOrig.clone()
+      // copy all the thread parameters to apply to session parameters
+      currentThreadSessionInfo.getThreadParams.getAll.asScala
+        .foreach(entry => carbonSessionInfo.getSessionParams.addProperty(entry._1, entry._2))
+      carbonSessionInfo.setThreadParams(currentThreadSessionInfo.getThreadParams)
+    }
+    // preserve thread parameters across call
+    ThreadLocalSessionInfo.setCarbonSessionInfo(carbonSessionInfo)
+    ThreadLocalSessionInfo
+      .setConfigurationToCurrentThread(sparkSession.sessionState.newHadoopConf())
+  }
+}
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/management/CarbonAlterTableCompactionCommand.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/management/CarbonAlterTableCompactionCommand.scala
index 5a55570..681e8a0 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/management/CarbonAlterTableCompactionCommand.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/management/CarbonAlterTableCompactionCommand.scala
@@ -26,7 +26,7 @@ import org.apache.spark.sql.{AnalysisException, CarbonEnv, Row, SparkSession, SQ
 import org.apache.spark.sql.catalyst.analysis.NoSuchTableException
 import org.apache.spark.sql.catalyst.TableIdentifier
 import org.apache.spark.sql.execution.command.{AlterTableModel, AtomicRunnableCommand, CompactionModel}
-import org.apache.spark.sql.hive.{CarbonRelation, CarbonSessionCatalog}
+import org.apache.spark.sql.hive.CarbonRelation
 import org.apache.spark.sql.optimizer.CarbonFilters
 import org.apache.spark.sql.util.CarbonException
 import org.apache.spark.util.AlterTableUtil
@@ -390,7 +390,7 @@ case class CarbonAlterTableCompactionCommand(
           Map("streaming" -> "false"),
           Seq.empty,
           true)(sparkSession,
-          sparkSession.sessionState.catalog.asInstanceOf[CarbonSessionCatalog])
+          sparkSession.sessionState.catalog)
         // 5. remove checkpoint
         FileFactory.deleteAllFilesOfDir(
           new File(CarbonTablePath.getStreamingCheckpointDir(carbonTable.getTablePath)))
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/management/CarbonInsertIntoHadoopFsRelationCommand.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/management/CarbonInsertIntoHadoopFsRelationCommand.scala
new file mode 100644
index 0000000..99c43b9
--- /dev/null
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/management/CarbonInsertIntoHadoopFsRelationCommand.scala
@@ -0,0 +1,282 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.sql.execution.command.management
+
+import java.io.IOException
+
+import scala.collection.mutable
+
+import org.apache.hadoop.fs.{FileSystem, Path}
+import org.apache.spark.internal.io.FileCommitProtocol
+import org.apache.spark.sql._
+import org.apache.spark.sql.catalyst.catalog.{BucketSpec, CatalogTable, CatalogTablePartition}
+import org.apache.spark.sql.catalyst.catalog.CatalogTypes.TablePartitionSpec
+import org.apache.spark.sql.catalyst.expressions.Attribute
+import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
+import org.apache.spark.sql.execution.SparkPlan
+import org.apache.spark.sql.execution.command._
+import org.apache.spark.sql.execution.datasources.{FileFormat, FileFormatWriter, FileIndex, PartitioningUtils}
+import org.apache.spark.sql.internal.SQLConf.PartitionOverwriteMode
+import org.apache.spark.sql.util.SchemaUtils
+
+import org.apache.carbondata.spark.util.CarbonScalaUtil
+
+/**
+ * A command for writing data to a
+ * [[org.apache.spark.sql.execution.datasources.HadoopFsRelation]].
+ * Supports both overwriting and appending.
+ * Writing to dynamic partitions is also supported.
+ *
+ * @param staticPartitions partial partitioning spec for write. This defines the scope of partition
+ *                         overwrites: when the spec is empty, all partitions are overwritten.
+ *                         When it covers a prefix of the partition keys, only partitions matching
+ *                         the prefix are overwritten.
+ * @param ifPartitionNotExists If true, only write if the partition does not exist.
+ *                             Only valid for static partitions.
+ */
+case class CarbonInsertIntoHadoopFsRelationCommand(
+    outputPath: Path,
+    staticPartitions: TablePartitionSpec,
+    ifPartitionNotExists: Boolean,
+    partitionColumns: Seq[Attribute],
+    bucketSpec: Option[BucketSpec],
+    fileFormat: FileFormat,
+    options: Map[String, String],
+    query: LogicalPlan,
+    mode: SaveMode,
+    catalogTable: Option[CatalogTable],
+    fileIndex: Option[FileIndex],
+    outputColumnNames: Seq[String])
+  extends DataWritingCommand {
+  import org.apache.spark.sql.catalyst.catalog.ExternalCatalogUtils.escapePathName
+
+  override def run(sparkSession: SparkSession, child: SparkPlan): Seq[Row] = {
+    // Most formats don't do well with duplicate columns, so lets not allow that
+    SchemaUtils.checkColumnNameDuplication(
+      outputColumnNames,
+      s"when inserting into $outputPath",
+      sparkSession.sessionState.conf.caseSensitiveAnalysis)
+
+    val hadoopConf = sparkSession.sessionState.newHadoopConfWithOptions(options)
+    val fs = outputPath.getFileSystem(hadoopConf)
+    val qualifiedOutputPath = outputPath.makeQualified(fs.getUri, fs.getWorkingDirectory)
+
+    val partitionsTrackedByCatalog = sparkSession.sessionState.conf.manageFilesourcePartitions &&
+      catalogTable.isDefined &&
+      catalogTable.get.partitionColumnNames.nonEmpty &&
+      catalogTable.get.tracksPartitionsInCatalog
+
+    var initialMatchingPartitions: Seq[TablePartitionSpec] = Nil
+    var customPartitionLocations: Map[TablePartitionSpec, String] = Map.empty
+    var matchingPartitions: Seq[CatalogTablePartition] = Seq.empty
+
+    // When partitions are tracked by the catalog, compute all custom partition locations that
+    // may be relevant to the insertion job.
+    if (partitionsTrackedByCatalog) {
+      matchingPartitions = sparkSession.sessionState.catalog.listPartitions(
+        catalogTable.get.identifier, Some(staticPartitions))
+      initialMatchingPartitions = matchingPartitions.map(_.spec)
+      customPartitionLocations = getCustomPartitionLocations(
+        fs, catalogTable.get, qualifiedOutputPath, matchingPartitions)
+    }
+
+    val pathExists = fs.exists(qualifiedOutputPath)
+
+    val enableDynamicOverwrite =
+      sparkSession.sessionState.conf.partitionOverwriteMode == PartitionOverwriteMode.DYNAMIC
+    // This config only makes sense when we are overwriting a partitioned dataset with dynamic
+    // partition columns.
+    val dynamicPartitionOverwrite = enableDynamicOverwrite && mode == SaveMode.Overwrite &&
+      staticPartitions.size < partitionColumns.length
+
+    val committer = FileCommitProtocol.instantiate(
+      sparkSession.sessionState.conf.fileCommitProtocolClass,
+      jobId = java.util.UUID.randomUUID().toString,
+      outputPath = outputPath.toString,
+      dynamicPartitionOverwrite = dynamicPartitionOverwrite)
+
+    val doInsertion = (mode, pathExists) match {
+      case (SaveMode.ErrorIfExists, true) =>
+        throw new AnalysisException(s"path $qualifiedOutputPath already exists.")
+      case (SaveMode.Overwrite, true) =>
+        if (ifPartitionNotExists && matchingPartitions.nonEmpty) {
+          false
+        } else if (dynamicPartitionOverwrite) {
+          // For dynamic partition overwrite, do not delete partition directories ahead.
+          true
+        } else {
+          deleteMatchingPartitions(fs, qualifiedOutputPath, customPartitionLocations, committer)
+          true
+        }
+      case (SaveMode.Append, _) | (SaveMode.Overwrite, _) | (SaveMode.ErrorIfExists, false) =>
+        true
+      case (SaveMode.Ignore, exists) =>
+        !exists
+      case (s, exists) =>
+        throw new IllegalStateException(s"unsupported save mode $s ($exists)")
+    }
+
+    if (doInsertion) {
+
+      def refreshUpdatedPartitions(updatedPartitionPaths: Set[String]): Unit = {
+        val updatedPartitions = updatedPartitionPaths.map(PartitioningUtils.parsePathFragment)
+        if (partitionsTrackedByCatalog) {
+          val newPartitions = updatedPartitions -- initialMatchingPartitions
+          if (newPartitions.nonEmpty) {
+            AlterTableAddPartitionCommand(
+              catalogTable.get.identifier, newPartitions.toSeq.map(p => (p, None)),
+              ifNotExists = true).run(sparkSession)
+          }
+          // For dynamic partition overwrite, we never remove partitions but only
+          // update existing ones.
+          if (mode == SaveMode.Overwrite && !dynamicPartitionOverwrite) {
+            val deletedPartitions = initialMatchingPartitions.toSet -- updatedPartitions
+            if (deletedPartitions.nonEmpty) {
+              AlterTableDropPartitionCommand(
+                catalogTable.get.identifier, deletedPartitions.toSeq,
+                ifExists = true, purge = false,
+                retainData = true /* already deleted */).run(sparkSession)
+            }
+          }
+        }
+      }
+
+      val updatedPartitionPaths =
+        FileFormatWriter.write(
+          sparkSession = sparkSession,
+          plan = child,
+          fileFormat = fileFormat,
+          committer = committer,
+          outputSpec = FileFormatWriter.OutputSpec(
+            qualifiedOutputPath.toString, customPartitionLocations, outputColumns),
+          hadoopConf = hadoopConf,
+          partitionColumns = partitionColumns,
+          bucketSpec = bucketSpec,
+          statsTrackers = Seq(basicWriteJobStatsTracker(hadoopConf)),
+          options = options)
+
+      val mappedParts = new mutable.LinkedHashMap[String, String]
+
+      val update = updatedPartitionPaths.map {
+        eachPath =>
+          mappedParts.clear()
+          val partitionFolders = eachPath.split("/")
+          partitionFolders.map {
+            folder =>
+              val part = folder.split("=")
+              mappedParts.put(part(0), part(1))
+          }
+          val convertedUpdatedPartitionPaths = CarbonScalaUtil.updatePartitions(
+            mappedParts,
+            CarbonEnv.getCarbonTable(catalogTable.get.identifier)(sparkSession)
+          )
+
+          val cols = partitionColumns
+            .map(col => {
+              val c = new mutable.StringBuilder()
+              c.append(col.name).append("=")
+                .append(convertedUpdatedPartitionPaths.get(col.name).get)
+                .toString()
+            })
+          cols.toList.mkString("/")
+      }
+
+     // update metastore partition metadata
+      refreshUpdatedPartitions(update)
+
+      // refresh cached files in FileIndex
+      fileIndex.foreach(_.refresh())
+      // refresh data cache if table is cached
+      sparkSession.catalog.refreshByPath(outputPath.toString)
+
+      if (catalogTable.nonEmpty) {
+        CommandUtils.updateTableStats(sparkSession, catalogTable.get)
+      }
+
+    } else {
+      logInfo("Skipping insertion into a relation that already exists.")
+    }
+
+    Seq.empty[Row]
+  }
+
+  /**
+   * Deletes all partition files that match the specified static prefix. Partitions with custom
+   * locations are also cleared based on the custom locations map given to this class.
+   */
+  private def deleteMatchingPartitions(
+      fs: FileSystem,
+      qualifiedOutputPath: Path,
+      customPartitionLocations: Map[TablePartitionSpec, String],
+      committer: FileCommitProtocol): Unit = {
+    val staticPartitionPrefix = if (staticPartitions.nonEmpty) {
+      "/" + partitionColumns.flatMap { p =>
+        staticPartitions.get(p.name) match {
+          case Some(value) =>
+            Some(escapePathName(p.name) + "=" + escapePathName(value))
+          case None =>
+            None
+        }
+      }.mkString("/")
+    } else {
+      ""
+    }
+    // first clear the path determined by the static partition keys (e.g. /table/foo=1)
+    val staticPrefixPath = qualifiedOutputPath.suffix(staticPartitionPrefix)
+    if (fs.exists(staticPrefixPath) && !committer.deleteWithJob(fs, staticPrefixPath, true)) {
+      throw new IOException(s"Unable to clear output " +
+        s"directory $staticPrefixPath prior to writing to it")
+    }
+    // now clear all custom partition locations (e.g. /custom/dir/where/foo=2/bar=4)
+    for ((spec, customLoc) <- customPartitionLocations) {
+      assert(
+        (staticPartitions.toSet -- spec).isEmpty,
+        "Custom partition location did not match static partitioning keys")
+      val path = new Path(customLoc)
+      if (fs.exists(path) && !committer.deleteWithJob(fs, path, true)) {
+        throw new IOException(s"Unable to clear partition " +
+          s"directory $path prior to writing to it")
+      }
+    }
+  }
+
+  /**
+   * Given a set of input partitions, returns those that have locations that differ from the
+   * Hive default (e.g. /k1=v1/k2=v2). These partitions were manually assigned locations by
+   * the user.
+   *
+   * @return a mapping from partition specs to their custom locations
+   */
+  private def getCustomPartitionLocations(
+      fs: FileSystem,
+      table: CatalogTable,
+      qualifiedOutputPath: Path,
+      partitions: Seq[CatalogTablePartition]): Map[TablePartitionSpec, String] = {
+    partitions.flatMap { p =>
+      val defaultLocation = qualifiedOutputPath.suffix(
+        "/" + PartitioningUtils.getPathFragment(p.spec, table.partitionSchema)).toString
+      val catalogLocation = new Path(p.location).makeQualified(
+        fs.getUri, fs.getWorkingDirectory).toString
+      if (catalogLocation != defaultLocation) {
+        Some(p.spec -> catalogLocation)
+      } else {
+        None
+      }
+    }.toMap
+  }
+}
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/management/CarbonLoadDataCommand.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/management/CarbonLoadDataCommand.scala
index 130580d..59efa13 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/management/CarbonLoadDataCommand.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/management/CarbonLoadDataCommand.scala
@@ -425,7 +425,7 @@ case class CarbonLoadDataCommand(
     val dateFormat = new SimpleDateFormat(dateFormatString)
     // Clean up the alreday dropped partitioned data
     SegmentFileStore.cleanSegments(table, null, false)
-    CarbonSession.threadSet("partition.operationcontext", operationContext)
+    CarbonUtils.threadSet("partition.operationcontext", operationContext)
     // input data from csv files. Convert to logical plan
     val allCols = new ArrayBuffer[String]()
     // get only the visible dimensions from table
@@ -593,7 +593,7 @@ case class CarbonLoadDataCommand(
         LOGGER.error(ex)
         throw ex
     } finally {
-      CarbonSession.threadUnset("partition.operationcontext")
+      CarbonUtils.threadUnset("partition.operationcontext")
       if (isOverwriteTable) {
         DataMapStoreManager.getInstance().clearDataMaps(table.getAbsoluteTableIdentifier)
         // Clean the overwriting segments if any.
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableAddColumnCommand.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableAddColumnCommand.scala
index c12ff6c..c2cda37 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableAddColumnCommand.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableAddColumnCommand.scala
@@ -21,7 +21,7 @@ import scala.collection.JavaConverters._
 
 import org.apache.spark.sql.{CarbonEnv, Row, SparkSession}
 import org.apache.spark.sql.execution.command.{AlterTableAddColumnsModel, AlterTableColumnSchemaGenerator, MetadataCommand}
-import org.apache.spark.sql.hive.CarbonSessionCatalog
+import org.apache.spark.sql.hive.CarbonSessionCatalogUtil
 import org.apache.spark.util.{AlterTableUtil, SparkUtil}
 
 import org.apache.carbondata.common.exceptions.sql.MalformedCarbonCommandException
@@ -110,8 +110,7 @@ private[sql] case class CarbonAlterTableAddColumnCommand(
       } else {
         Some(carbonColumns ++ sortedColsBasedActualSchemaOrder)
       }
-      sparkSession.sessionState.catalog.asInstanceOf[CarbonSessionCatalog].alterAddColumns(
-        tableIdentifier, schemaParts, cols)
+      CarbonSessionCatalogUtil.alterAddColumns(tableIdentifier, schemaParts, cols, sparkSession)
       sparkSession.catalog.refreshTable(tableIdentifier.quotedString)
       val alterTablePostExecutionEvent: AlterTableAddColumnPostEvent =
         AlterTableAddColumnPostEvent(sparkSession, carbonTable, alterTableAddColumnsModel)
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableColRenameDataTypeChangeCommand.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableColRenameDataTypeChangeCommand.scala
index 7e66d34..71842a4 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableColRenameDataTypeChangeCommand.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableColRenameDataTypeChangeCommand.scala
@@ -22,7 +22,7 @@ import scala.collection.mutable
 
 import org.apache.spark.sql.{CarbonEnv, Row, SparkSession}
 import org.apache.spark.sql.execution.command.{AlterTableDataTypeChangeModel, DataTypeInfo, MetadataCommand}
-import org.apache.spark.sql.hive.CarbonSessionCatalog
+import org.apache.spark.sql.hive.CarbonSessionCatalogUtil
 import org.apache.spark.util.{AlterTableUtil, SparkUtil}
 
 import org.apache.carbondata.common.exceptions.sql.MalformedCarbonCommandException
@@ -33,8 +33,7 @@ import org.apache.carbondata.core.metadata.converter.ThriftWrapperSchemaConverte
 import org.apache.carbondata.core.metadata.datatype.DecimalType
 import org.apache.carbondata.core.metadata.schema.table.CarbonTable
 import org.apache.carbondata.core.metadata.schema.table.column.CarbonColumn
-import org.apache.carbondata.events.{AlterTableColRenameAndDataTypeChangePostEvent,
-  AlterTableColRenameAndDataTypeChangePreEvent, OperationContext, OperationListenerBus}
+import org.apache.carbondata.events.{AlterTableColRenameAndDataTypeChangePostEvent, AlterTableColRenameAndDataTypeChangePreEvent, OperationContext, OperationListenerBus}
 import org.apache.carbondata.format.{ColumnSchema, SchemaEvolutionEntry, TableInfo}
 import org.apache.carbondata.spark.util.DataTypeConverterUtil
 
@@ -305,8 +304,8 @@ private[sql] case class CarbonAlterTableColRenameDataTypeChangeCommand(
       carbonTable,
       schemaEvolutionEntry,
       tableInfo)(sparkSession)
-    sparkSession.sessionState.catalog.asInstanceOf[CarbonSessionCatalog]
-      .alterColumnChangeDataTypeOrRename(tableIdentifier, schemaParts, columns)
+    CarbonSessionCatalogUtil
+      .alterColumnChangeDataTypeOrRename(tableIdentifier, schemaParts, columns, sparkSession)
     sparkSession.catalog.refreshTable(tableIdentifier.quotedString)
   }
 
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableDropColumnCommand.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableDropColumnCommand.scala
index bdc0228..6071b41 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableDropColumnCommand.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableDropColumnCommand.scala
@@ -22,7 +22,7 @@ import scala.collection.mutable.ListBuffer
 
 import org.apache.spark.sql.{CarbonEnv, Row, SparkSession}
 import org.apache.spark.sql.execution.command.{AlterTableDropColumnModel, MetadataCommand}
-import org.apache.spark.sql.hive.CarbonSessionCatalog
+import org.apache.spark.sql.hive.CarbonSessionCatalogUtil
 import org.apache.spark.util.{AlterTableUtil, SparkUtil}
 
 import org.apache.carbondata.common.exceptions.sql.MalformedCarbonCommandException
@@ -164,8 +164,8 @@ private[sql] case class CarbonAlterTableDropColumnCommand(
       } else {
         Some(cols)
       }
-      sparkSession.sessionState.catalog.asInstanceOf[CarbonSessionCatalog]
-        .alterDropColumns(tableIdentifier, schemaParts, columns)
+      CarbonSessionCatalogUtil
+        .alterDropColumns(tableIdentifier, schemaParts, columns, sparkSession)
       sparkSession.catalog.refreshTable(tableIdentifier.quotedString)
       // TODO: 1. add check for deletion of index tables
 
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableRenameCommand.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableRenameCommand.scala
index d708529..be83445 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableRenameCommand.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableRenameCommand.scala
@@ -23,7 +23,7 @@ import org.apache.spark.sql.{CarbonEnv, SparkSession}
 import org.apache.spark.sql.catalyst.TableIdentifier
 import org.apache.spark.sql.catalyst.catalog.CatalogTablePartition
 import org.apache.spark.sql.execution.command.{AlterTableRenameModel, MetadataCommand}
-import org.apache.spark.sql.hive.{CarbonRelation, CarbonSessionCatalog}
+import org.apache.spark.sql.hive.{CarbonRelation, CarbonSessionCatalogUtil}
 import org.apache.spark.util.{AlterTableUtil, DataMapUtil}
 
 import org.apache.carbondata.common.exceptions.sql.MalformedCarbonCommandException
@@ -135,10 +135,10 @@ private[sql] case class CarbonAlterTableRenameCommand(
           sparkSession.sessionState.catalog.listPartitions(oldTableIdentifier)
       }
       sparkSession.catalog.refreshTable(oldTableIdentifier.quotedString)
-      sparkSession.sessionState.catalog.asInstanceOf[CarbonSessionCatalog].alterTableRename(
+      CarbonSessionCatalogUtil.alterTableRename(
           oldTableIdentifier,
           newTableIdentifier,
-        oldAbsoluteTableIdentifier.getTablePath)
+        oldAbsoluteTableIdentifier.getTablePath, sparkSession)
       hiveRenameSuccess = true
 
       metastore.updateTableSchemaForAlter(
@@ -167,10 +167,10 @@ private[sql] case class CarbonAlterTableRenameCommand(
         throw e
       case e: Exception =>
         if (hiveRenameSuccess) {
-          sparkSession.sessionState.catalog.asInstanceOf[CarbonSessionCatalog].alterTableRename(
+          CarbonSessionCatalogUtil.alterTableRename(
             newTableIdentifier,
             oldTableIdentifier,
-            carbonTable.getAbsoluteTableIdentifier.getTablePath)
+            carbonTable.getAbsoluteTableIdentifier.getTablePath, sparkSession)
         }
         if (carbonTable != null) {
           AlterTableUtil.revertRenameTableChanges(
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableSetCommand.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableSetCommand.scala
index b1e7e33..2e58819 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableSetCommand.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableSetCommand.scala
@@ -20,7 +20,7 @@ package org.apache.spark.sql.execution.command.schema
 import org.apache.spark.sql.{Row, SparkSession}
 import org.apache.spark.sql.catalyst.TableIdentifier
 import org.apache.spark.sql.execution.command._
-import org.apache.spark.sql.hive.CarbonSessionCatalog
+import org.apache.spark.sql.hive.CarbonSessionCatalogUtil
 import org.apache.spark.util.AlterTableUtil
 
 private[sql] case class CarbonAlterTableSetCommand(
@@ -37,7 +37,7 @@ private[sql] case class CarbonAlterTableSetCommand(
       properties,
       Nil,
       set = true)(sparkSession,
-      sparkSession.sessionState.catalog.asInstanceOf[CarbonSessionCatalog])
+      sparkSession.sessionState.catalog)
     setAuditInfo(properties)
     Seq.empty
   }
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableUnsetCommand.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableUnsetCommand.scala
index 361ba1d..49f4679 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableUnsetCommand.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/schema/CarbonAlterTableUnsetCommand.scala
@@ -20,7 +20,6 @@ package org.apache.spark.sql.execution.command.schema
 import org.apache.spark.sql.{Row, SparkSession}
 import org.apache.spark.sql.catalyst.TableIdentifier
 import org.apache.spark.sql.execution.command._
-import org.apache.spark.sql.hive.CarbonSessionCatalog
 import org.apache.spark.util.AlterTableUtil
 
 
@@ -36,7 +35,7 @@ private[sql] case class CarbonAlterTableUnsetCommand(
       tableIdentifier.table)
     AlterTableUtil.modifyTableProperties(tableIdentifier, Map.empty[String, String],
       propKeys, false)(sparkSession,
-      sparkSession.sessionState.catalog.asInstanceOf[CarbonSessionCatalog])
+      sparkSession.sessionState.catalog)
     setAuditInfo(Map("unset" -> propKeys.mkString(", ")))
     Seq.empty
   }
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/strategy/DDLStrategy.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/strategy/DDLStrategy.scala
index a851bc3..8f03fe1 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/execution/strategy/DDLStrategy.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/execution/strategy/DDLStrategy.scala
@@ -24,13 +24,13 @@ import org.apache.spark.sql.catalyst.catalog.CatalogTable
 import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
 import org.apache.spark.sql.execution.{SparkPlan, SparkStrategy}
 import org.apache.spark.sql.execution.command._
-import org.apache.spark.sql.execution.command.management.{CarbonAlterTableCompactionCommand, CarbonInsertIntoCommand, CarbonLoadDataCommand, RefreshCarbonTableCommand}
+import org.apache.spark.sql.execution.command.management.{CarbonAlterTableCompactionCommand, CarbonInsertIntoCommand, CarbonInsertIntoHadoopFsRelationCommand, CarbonLoadDataCommand, RefreshCarbonTableCommand}
 import org.apache.spark.sql.execution.command.partition.{CarbonAlterTableAddHivePartitionCommand, CarbonAlterTableDropHivePartitionCommand}
 import org.apache.spark.sql.execution.command.schema._
 import org.apache.spark.sql.execution.command.table.{CarbonCreateTableLikeCommand, CarbonDescribeFormattedCommand, CarbonDropTableCommand}
 import org.apache.spark.sql.hive.execution.command.{CarbonDropDatabaseCommand, CarbonResetCommand, CarbonSetCommand}
 import org.apache.spark.sql.CarbonExpressions.{CarbonDescribeTable => DescribeTableCommand}
-import org.apache.spark.sql.execution.datasources.{RefreshResource, RefreshTable}
+import org.apache.spark.sql.execution.datasources.{InsertIntoHadoopFsRelationCommand, RefreshResource, RefreshTable}
 import org.apache.spark.sql.hive.{CarbonRelation, CreateCarbonSourceTableAsSelectCommand}
 import org.apache.spark.sql.parser.CarbonSpark2SqlParser
 import org.apache.spark.sql.types.StructField
@@ -277,7 +277,7 @@ class DDLStrategy(sparkSession: SparkSession) extends SparkStrategy {
           || table.provider.get.equalsIgnoreCase("carbondata")) =>
         val updatedCatalog = CarbonSource
           .updateCatalogTableWithCarbonSchema(table, sparkSession)
-        val cmd = CreateDataSourceTableCommand(updatedCatalog, ignoreIfExists)
+        val cmd = new CreateDataSourceTableCommand(updatedCatalog, ignoreIfExists)
         ExecutedCommandExec(cmd) :: Nil
       case AlterTableSetPropertiesCommand(tableName, properties, isView)
         if CarbonEnv.getInstance(sparkSession).carbonMetaStore
@@ -372,6 +372,17 @@ class DDLStrategy(sparkSession: SparkSession) extends SparkStrategy {
         } else {
           ExecutedCommandExec(alterSetLoc) :: Nil
         }
+      case iihrc@InsertIntoHadoopFsRelationCommand(
+      outputPath, staticPartitions, ifPartitionNotExists, partitionColumns,
+      bucketSpec, fileFormat, options, query, mode, catalogTable, fileIndex, outputColumnNames)
+        if (catalogTable.isDefined && CarbonEnv.getInstance(sparkSession).carbonMetaStore
+          .tableExists(catalogTable.get.identifier)(sparkSession)) =>
+        DataWritingCommandExec(
+          CarbonInsertIntoHadoopFsRelationCommand(
+            outputPath, staticPartitions, ifPartitionNotExists, partitionColumns,
+            bucketSpec, fileFormat, options, query, mode, catalogTable, fileIndex,
+            outputColumnNames),
+          planLater(iihrc.query)) :: Nil
       case _ => Nil
     }
   }
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/hive/CarbonHiveMetaStore.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/hive/CarbonHiveMetaStore.scala
index f2133cc..474f972 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/hive/CarbonHiveMetaStore.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/hive/CarbonHiveMetaStore.scala
@@ -157,8 +157,11 @@ class CarbonHiveMetaStore extends CarbonFileMetastore {
     val dbName = newTableIdentifier.getDatabaseName
     val tableName = newTableIdentifier.getTableName
     val schemaParts = CarbonUtil.convertToMultiGsonStrings(wrapperTableInfo, "=", "'", "")
-    val hiveClient = sparkSession.sessionState.catalog.asInstanceOf[CarbonSessionCatalog]
-      .getClient()
+    val hiveClient = sparkSession
+      .sessionState
+      .catalog
+      .externalCatalog.asInstanceOf[HiveExternalCatalog]
+      .client
     hiveClient.runSqlHive(s"ALTER TABLE $dbName.$tableName SET SERDEPROPERTIES($schemaParts)")
 
     sparkSession.catalog.refreshTable(TableIdentifier(tableName, Some(dbName)).quotedString)
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/hive/CarbonSessionCatalog.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/hive/CarbonSessionCatalog.scala
deleted file mode 100644
index 20d43df..0000000
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/hive/CarbonSessionCatalog.scala
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
-* Licensed to the Apache Software Foundation (ASF) under one or more
-* contributor license agreements.  See the NOTICE file distributed with
-* this work for additional information regarding copyright ownership.
-* The ASF licenses this file to You under the Apache License, Version 2.0
-* (the "License"); you may not use this file except in compliance with
-* the License.  You may obtain a copy of the License at
-*
-*    http://www.apache.org/licenses/LICENSE-2.0
-*
-* Unless required by applicable law or agreed to in writing, software
-* distributed under the License is distributed on an "AS IS" BASIS,
-* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-* See the License for the specific language governing permissions and
-* limitations under the License.
-*/
-package org.apache.spark.sql.hive
-
-import org.apache.hadoop.fs.Path
-import org.apache.spark.sql.{CarbonEnv, SparkSession}
-import org.apache.spark.sql.catalyst.TableIdentifier
-import org.apache.spark.sql.catalyst.catalog.{CatalogStorageFormat, CatalogTablePartition}
-import org.apache.spark.sql.catalyst.expressions.Expression
-
-import org.apache.carbondata.common.annotations.{InterfaceAudience, InterfaceStability}
-import org.apache.carbondata.core.metadata.schema.table.column.{ColumnSchema => ColumnSchema}
-
-/**
- * This interface defines those common api used by carbon for spark-2.1 and spark-2.2 integration,
- * but are not defined in SessionCatalog or HiveSessionCatalog to give contract to the
- * Concrete implementation classes.
- * For example CarbonSessionCatalog defined in 2.1 and 2.2.
- *
- */
-@InterfaceAudience.Internal
-@InterfaceStability.Stable
-trait CarbonSessionCatalog {
-  /**
-   * implementation to be provided by each CarbonSessionCatalog based on on used ExternalCatalog
-   *
-   * @return
-   */
-  def getClient(): org.apache.spark.sql.hive.client.HiveClient
-
-  /**
-   * The method returns the CarbonEnv instance
-   *
-   * @return
-   */
-  def getCarbonEnv(): CarbonEnv
-
-  /**
-   * This is alternate way of getting partition information. It first fetches all partitions from
-   * hive and then apply filter instead of querying hive along with filters.
-   *
-   * @param partitionFilters
-   * @param sparkSession
-   * @param identifier
-   * @return
-   */
-  def getPartitionsAlternate(partitionFilters: Seq[Expression], sparkSession: SparkSession,
-      identifier: TableIdentifier): Seq[CatalogTablePartition]
-
-  /**
-   * Update the storageformat with new location information
-   */
-  def updateStorageLocation(
-      path: Path,
-      storage: CatalogStorageFormat,
-      newTableName: String,
-      dbName: String): CatalogStorageFormat
-
-  /**
-   * Method used to update the table name
-   * @param oldTableIdentifier old table identifier
-   * @param newTableIdentifier new table identifier
-   * @param newTablePath new table path
-   */
-  def alterTableRename(oldTableIdentifier: TableIdentifier,
-      newTableIdentifier: TableIdentifier,
-      newTablePath: String): Unit = {
-    getClient().runSqlHive(
-      s"ALTER TABLE ${ oldTableIdentifier.database.get }.${ oldTableIdentifier.table } " +
-      s"RENAME TO ${ oldTableIdentifier.database.get }.${ newTableIdentifier.table }")
-    getClient().runSqlHive(
-      s"ALTER TABLE ${ oldTableIdentifier.database.get }.${ newTableIdentifier.table } " +
-      s"SET SERDEPROPERTIES" +
-      s"('tableName'='${ newTableIdentifier.table }', " +
-      s"'dbName'='${ oldTableIdentifier.database.get }', 'tablePath'='${ newTablePath }')")
-  }
-
-  /**
-   * Below method will be used to update serd properties
-   * @param tableIdentifier table identifier
-   * @param schemaParts schema parts
-   * @param cols cols
-   */
-  def alterTable(tableIdentifier: TableIdentifier,
-      schemaParts: String,
-      cols: Option[Seq[ColumnSchema]]): Unit = {
-    getClient()
-      .runSqlHive(s"ALTER TABLE ${ tableIdentifier.database.get }.${ tableIdentifier.table } " +
-                  s"SET TBLPROPERTIES(${ schemaParts })")
-  }
-
-  /**
-   * Below method will be used to add new column
-   * @param tableIdentifier table identifier
-   * @param schemaParts schema parts
-   * @param cols cols
-   */
-  def alterAddColumns(tableIdentifier: TableIdentifier,
-      schemaParts: String,
-      cols: Option[Seq[ColumnSchema]]): Unit
-
-  /**
-   * Below method will be used to drop column
-   * @param tableIdentifier table identifier
-   * @param schemaParts schema parts
-   * @param cols cols
-   */
-  def alterDropColumns(tableIdentifier: TableIdentifier,
-      schemaParts: String,
-      cols: Option[Seq[ColumnSchema]]): Unit
-
-  /**
-   * Below method will be used to alter data type of column in schema
-   * @param tableIdentifier table identifier
-   * @param schemaParts schema parts
-   * @param cols cols
-   */
-  def alterColumnChangeDataTypeOrRename(tableIdentifier: TableIdentifier,
-      schemaParts: String,
-      cols: Option[Seq[ColumnSchema]]): Unit
-}
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/hive/cli/CarbonSQLCLIDriver.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/hive/cli/CarbonSQLCLIDriver.scala
index 733744f..fa321ac 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/hive/cli/CarbonSQLCLIDriver.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/hive/cli/CarbonSQLCLIDriver.scala
@@ -17,8 +17,8 @@
 
 package org.apache.spark.sql.hive.cli
 
-import org.apache.spark.{SparkConf, SparkContext}
-import org.apache.spark.sql.{SparkSession, SQLContext}
+import org.apache.spark.SparkContext
+import org.apache.spark.sql.{CarbonEnv, SparkSession, SQLContext}
 import org.apache.spark.sql.hive.thriftserver.{SparkSQLCLIDriver, SparkSQLEnv}
 
 import org.apache.carbondata.common.logging.LogServiceFactory
@@ -39,9 +39,6 @@ object CarbonSQLCLIDriver {
 
   def init() {
     if (hiveContext == null) {
-
-      import org.apache.spark.sql.CarbonSession._
-
       val storePath = System.getenv("CARBON_HOME") + "/bin/carbonsqlclistore"
       val warehouse = System.getenv("CARBON_HOME") + "/warehouse"
       val carbon = SparkSession
@@ -49,7 +46,9 @@ object CarbonSQLCLIDriver {
           .master(System.getProperty("spark.master"))
           .appName("CarbonSQLCLIDriver")
           .config("spark.sql.warehouse.dir", warehouse)
-          .getOrCreateCarbonSession(storePath)
+          .config("spark.sql.extensions", "org.apache.spark.sql.CarbonExtensions")
+          .getOrCreate()
+      CarbonEnv.getInstance(carbon)
 
       hiveContext = carbon.sqlContext
       hiveContext.conf.getAllConfs.toSeq.sorted.foreach { case (k, v) =>
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/optimizer/CarbonFilters.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/optimizer/CarbonFilters.scala
index 2765c5f..50eca11 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/optimizer/CarbonFilters.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/optimizer/CarbonFilters.scala
@@ -17,7 +17,7 @@
 
 package org.apache.spark.sql.optimizer
 
-import java.util
+import java.util.ArrayList
 
 import scala.collection.JavaConverters._
 import scala.util.Try
@@ -31,7 +31,7 @@ import org.apache.spark.sql.CarbonEndsWith
 import org.apache.spark.sql.CarbonExpressions.{MatchCast => Cast}
 import org.apache.spark.sql.carbondata.execution.datasources.CarbonSparkDataSourceUtil
 import org.apache.spark.sql.catalyst.TableIdentifier
-import org.apache.spark.sql.hive.CarbonSessionCatalog
+import org.apache.spark.sql.hive.CarbonSessionCatalogUtil
 import org.apache.spark.util.{CarbonReflectionUtils, SparkUtil}
 
 import org.apache.carbondata.core.constants.CarbonCommonConstants
@@ -49,8 +49,6 @@ import org.apache.carbondata.core.util.ThreadLocalSessionInfo
 import org.apache.carbondata.datamap.{TextMatch, TextMatchLimit}
 import org.apache.carbondata.spark.CarbonAliasDecoderRelation
 
-
-
 /**
  * All filter conversions are done here.
  */
@@ -526,8 +524,7 @@ object CarbonFilters {
           sparkSession.sessionState.catalog.listPartitionsByFilter(identifier, partitionFilters)
         } else {
           // Read partitions alternatively by first get all partitions then filter them
-          sparkSession.sessionState.catalog.
-            asInstanceOf[CarbonSessionCatalog].getPartitionsAlternate(
+          CarbonSessionCatalogUtil.getPartitionsAlternate(
             partitionFilters,
             sparkSession,
             identifier)
@@ -535,8 +532,7 @@ object CarbonFilters {
       } catch {
         case e: Exception =>
           // Get partition information alternatively.
-          sparkSession.sessionState.catalog.
-            asInstanceOf[CarbonSessionCatalog].getPartitionsAlternate(
+          CarbonSessionCatalogUtil.getPartitionsAlternate(
             partitionFilters,
             sparkSession,
             identifier)
@@ -544,7 +540,7 @@ object CarbonFilters {
     }
     Some(partitions.map { partition =>
       new PartitionSpec(
-        new util.ArrayList[String]( partition.spec.seq.map{case (column, value) =>
+        new ArrayList[String]( partition.spec.seq.map{case (column, value) =>
           column + "=" + value}.toList.asJava), partition.location)
     })
   }
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/optimizer/CarbonLateDecodeRule.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/optimizer/CarbonLateDecodeRule.scala
index b124e9a..ad4d6fa 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/optimizer/CarbonLateDecodeRule.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/optimizer/CarbonLateDecodeRule.scala
@@ -60,7 +60,7 @@ class CarbonLateDecodeRule extends Rule[LogicalPlan] with PredicateHelper {
       Profiler.invokeIfEnable {
         Profiler.send(
           Optimizer(
-            CarbonSession.threadStatementId.get(),
+            CarbonUtils.threadStatementId.get(),
             queryStatistic.getStartTime,
             queryStatistic.getTimeTaken
           )
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/parser/CarbonSparkSqlParser.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/parser/CarbonSparkSqlParser.scala
index 357e1ec..2897eac 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/parser/CarbonSparkSqlParser.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/parser/CarbonSparkSqlParser.scala
@@ -19,7 +19,7 @@ package org.apache.spark.sql.parser
 import scala.collection.mutable
 
 import org.antlr.v4.runtime.tree.TerminalNode
-import org.apache.spark.sql.{CarbonSession, SparkSession}
+import org.apache.spark.sql.{CarbonUtils, SparkSession}
 import org.apache.spark.sql.catalyst.parser.{AbstractSqlParser, SqlBaseParser}
 import org.apache.spark.sql.catalyst.parser.SqlBaseParser._
 import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
@@ -44,7 +44,7 @@ class CarbonSparkSqlParser(conf: SQLConf, sparkSession: SparkSession) extends Ab
   private val substitutor = new VariableSubstitution(conf)
 
   override def parsePlan(sqlText: String): LogicalPlan = {
-    CarbonSession.updateSessionInfoToCurrentThread(sparkSession)
+    CarbonUtils.updateSessionInfoToCurrentThread(sparkSession)
     try {
       val parsedPlan = super.parsePlan(sqlText)
       CarbonScalaUtil.cleanParserThreadLocals
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/test/Spark2TestQueryExecutor.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/test/CarbonSpark2TestQueryExecutor.scala
similarity index 85%
copy from integration/spark2/src/main/scala/org/apache/spark/sql/test/Spark2TestQueryExecutor.scala
copy to integration/spark2/src/main/scala/org/apache/spark/sql/test/CarbonSpark2TestQueryExecutor.scala
index bfaa0cb..60a951a 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/test/Spark2TestQueryExecutor.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/test/CarbonSpark2TestQueryExecutor.scala
@@ -30,29 +30,26 @@ import org.apache.carbondata.core.util.CarbonProperties
  * This class is a sql executor of unit test case for spark version 2.x.
  */
 
-class Spark2TestQueryExecutor extends TestQueryExecutorRegister {
+class CarbonSpark2TestQueryExecutor extends TestQueryExecutorRegister {
 
-  override def sql(sqlText: String): DataFrame = Spark2TestQueryExecutor.spark.sql(sqlText)
+  override def sql(sqlText: String): DataFrame = CarbonSpark2TestQueryExecutor.spark.sql(sqlText)
 
-  override def sqlContext: SQLContext = Spark2TestQueryExecutor.spark.sqlContext
+  override def sqlContext: SQLContext = CarbonSpark2TestQueryExecutor.spark.sqlContext
 
-  override def stop(): Unit = Spark2TestQueryExecutor.spark.stop()
+  override def stop(): Unit = CarbonSpark2TestQueryExecutor.spark.stop()
 }
 
-object Spark2TestQueryExecutor {
+object CarbonSpark2TestQueryExecutor {
   private val LOGGER = LogServiceFactory.getLogService(this.getClass.getCanonicalName)
   LOGGER.info("use TestQueryExecutorImplV2")
   CarbonProperties.getInstance()
     .addProperty(CarbonCommonConstants.CARBON_BAD_RECORDS_ACTION, "FORCE")
 
-
-  import org.apache.spark.sql.CarbonSession._
-
   val conf = new SparkConf()
   if (!TestQueryExecutor.masterUrl.startsWith("local")) {
     conf.setJars(TestQueryExecutor.jars).
-      set("spark.driver.memory", "14g").
-      set("spark.executor.memory", "8g").
+      set("spark.driver.memory", "6g").
+      set("spark.executor.memory", "4g").
       set("spark.executor.cores", "2").
       set("spark.executor.instances", "2").
       set("spark.cores.max", "4")
@@ -65,6 +62,7 @@ object Spark2TestQueryExecutor {
       System.getProperty("spark.hadoop.hive.metastore.uris"))
   }
   val metaStoreDB = s"$integrationPath/spark-common-cluster-test/target"
+  import org.apache.spark.sql.CarbonSession._
   val spark = SparkSession
     .builder().config(conf)
     .master(TestQueryExecutor.masterUrl)
@@ -72,7 +70,11 @@ object Spark2TestQueryExecutor {
     .enableHiveSupport()
     .config("spark.sql.warehouse.dir", warehouse)
     .config("spark.sql.crossJoin.enabled", "true")
+    .config("spark.sql.extensions", "org.apache.spark.sql.CarbonExtensions")
     .getOrCreateCarbonSession(null, TestQueryExecutor.metaStoreDB)
+
+  CarbonEnv.getInstance(spark)
+
   if (warehouse.startsWith("hdfs://")) {
     System.setProperty(CarbonCommonConstants.HDFS_TEMP_LOCATION, warehouse)
     CarbonProperties.getInstance().addProperty(CarbonCommonConstants.LOCK_TYPE,
diff --git a/integration/spark2/src/main/scala/org/apache/spark/sql/test/Spark2TestQueryExecutor.scala b/integration/spark2/src/main/scala/org/apache/spark/sql/test/Spark2TestQueryExecutor.scala
index bfaa0cb..df03dd6 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/sql/test/Spark2TestQueryExecutor.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/sql/test/Spark2TestQueryExecutor.scala
@@ -45,9 +45,6 @@ object Spark2TestQueryExecutor {
   CarbonProperties.getInstance()
     .addProperty(CarbonCommonConstants.CARBON_BAD_RECORDS_ACTION, "FORCE")
 
-
-  import org.apache.spark.sql.CarbonSession._
-
   val conf = new SparkConf()
   if (!TestQueryExecutor.masterUrl.startsWith("local")) {
     conf.setJars(TestQueryExecutor.jars).
@@ -65,6 +62,7 @@ object Spark2TestQueryExecutor {
       System.getProperty("spark.hadoop.hive.metastore.uris"))
   }
   val metaStoreDB = s"$integrationPath/spark-common-cluster-test/target"
+  System.setProperty("derby.system.home", metaStoreDB)
   val spark = SparkSession
     .builder().config(conf)
     .master(TestQueryExecutor.masterUrl)
@@ -72,7 +70,11 @@ object Spark2TestQueryExecutor {
     .enableHiveSupport()
     .config("spark.sql.warehouse.dir", warehouse)
     .config("spark.sql.crossJoin.enabled", "true")
-    .getOrCreateCarbonSession(null, TestQueryExecutor.metaStoreDB)
+    .config("spark.sql.extensions", "org.apache.spark.sql.CarbonExtensions")
+    .getOrCreate()
+
+  CarbonEnv.getInstance(spark)
+
   if (warehouse.startsWith("hdfs://")) {
     System.setProperty(CarbonCommonConstants.HDFS_TEMP_LOCATION, warehouse)
     CarbonProperties.getInstance().addProperty(CarbonCommonConstants.LOCK_TYPE,
diff --git a/integration/spark2/src/main/scala/org/apache/spark/util/AlterTableUtil.scala b/integration/spark2/src/main/scala/org/apache/spark/util/AlterTableUtil.scala
index b7b1be4..17adc2b 100644
--- a/integration/spark2/src/main/scala/org/apache/spark/util/AlterTableUtil.scala
+++ b/integration/spark2/src/main/scala/org/apache/spark/util/AlterTableUtil.scala
@@ -27,7 +27,8 @@ import org.apache.commons.lang3.StringUtils
 import org.apache.spark.SparkConf
 import org.apache.spark.sql.{CarbonEnv, SparkSession}
 import org.apache.spark.sql.catalyst.TableIdentifier
-import org.apache.spark.sql.hive.{CarbonRelation, CarbonSessionCatalog}
+import org.apache.spark.sql.catalyst.catalog.SessionCatalog
+import org.apache.spark.sql.hive.{CarbonRelation, CarbonSessionCatalogUtil}
 import org.apache.spark.sql.hive.HiveExternalCatalog._
 
 import org.apache.carbondata.common.exceptions.sql.MalformedCarbonCommandException
@@ -406,7 +407,7 @@ object AlterTableUtil {
    */
   def modifyTableProperties(tableIdentifier: TableIdentifier, properties: Map[String, String],
       propKeys: Seq[String], set: Boolean)
-    (sparkSession: SparkSession, catalog: CarbonSessionCatalog): Unit = {
+    (sparkSession: SparkSession, catalog: SessionCatalog): Unit = {
     val tableName = tableIdentifier.table
     val dbName = tableIdentifier.database.getOrElse(sparkSession.catalog.currentDatabase)
     val locksToBeAcquired = List(LockUsage.METADATA_LOCK, LockUsage.COMPACTION_LOCK)
@@ -510,7 +511,7 @@ object AlterTableUtil {
       val (tableIdentifier, schemParts) = updateSchemaInfo(
         carbonTable = carbonTable,
         thriftTable = thriftTable)(sparkSession)
-      catalog.alterTable(tableIdentifier, schemParts, None)
+      CarbonSessionCatalogUtil.alterTable(tableIdentifier, schemParts, None, sparkSession)
       sparkSession.catalog.refreshTable(tableIdentifier.quotedString)
       // check and clear the block/blocklet cache
       checkAndClearBlockletCache(carbonTable,
diff --git a/integration/spark2/src/main/spark2.3/org/apache/spark/sql/hive/CarbonOptimizer.scala b/integration/spark2/src/main/spark2.3/org/apache/spark/sql/hive/CarbonOptimizer.scala
index f1b632b..e436c55 100644
--- a/integration/spark2/src/main/spark2.3/org/apache/spark/sql/hive/CarbonOptimizer.scala
+++ b/integration/spark2/src/main/spark2.3/org/apache/spark/sql/hive/CarbonOptimizer.scala
@@ -34,4 +34,4 @@ class CarbonOptimizer(
     val transFormedPlan: LogicalPlan = CarbonOptimizerUtil.transformForScalarSubQuery(plan)
     super.execute(transFormedPlan)
   }
-}
\ No newline at end of file
+} 
\ No newline at end of file
diff --git a/integration/spark2/src/resources/META-INF/services/org.apache.spark.sql.test.TestQueryExecutorRegister b/integration/spark2/src/resources/META-INF/services/org.apache.spark.sql.test.TestQueryExecutorRegister
index 220bbf6..f346059 100644
--- a/integration/spark2/src/resources/META-INF/services/org.apache.spark.sql.test.TestQueryExecutorRegister
+++ b/integration/spark2/src/resources/META-INF/services/org.apache.spark.sql.test.TestQueryExecutorRegister
@@ -14,4 +14,5 @@
 ## See the License for the specific language governing permissions and
 ## limitations under the License.
 ## ------------------------------------------------------------------------
-org.apache.spark.sql.test.Spark2TestQueryExecutor
\ No newline at end of file
+org.apache.spark.sql.test.Spark2TestQueryExecutor
+org.apache.spark.sql.test.CarbonSpark2TestQueryExecutor
\ No newline at end of file
diff --git a/integration/spark2/src/test/scala/org/apache/carbondata/datamap/bloom/BloomCoarseGrainDataMapSuite.scala b/integration/spark2/src/test/scala/org/apache/carbondata/datamap/bloom/BloomCoarseGrainDataMapSuite.scala
index 5c7cc0b..a958aaf 100644
--- a/integration/spark2/src/test/scala/org/apache/carbondata/datamap/bloom/BloomCoarseGrainDataMapSuite.scala
+++ b/integration/spark2/src/test/scala/org/apache/carbondata/datamap/bloom/BloomCoarseGrainDataMapSuite.scala
@@ -22,7 +22,7 @@ import java.util.UUID
 
 import scala.util.Random
 
-import org.apache.spark.sql.{CarbonSession, DataFrame, Row}
+import org.apache.spark.sql.{CarbonUtils, DataFrame, Row}
 import org.apache.spark.sql.test.util.QueryTest
 import org.scalatest.{BeforeAndAfterAll, BeforeAndAfterEach}
 
@@ -32,7 +32,7 @@ import org.apache.carbondata.core.datamap.status.DataMapStatusManager
 import org.apache.carbondata.core.util.CarbonProperties
 
 class BloomCoarseGrainDataMapSuite extends QueryTest with BeforeAndAfterAll with BeforeAndAfterEach {
-  val carbonSession = sqlContext.sparkSession.asInstanceOf[CarbonSession]
+  val carbonSession = sqlContext.sparkSession
   val bigFile = s"$resourcesPath/bloom_datamap_input_big.csv"
   val smallFile = s"$resourcesPath/bloom_datamap_input_small.csv"
   val normalTable = "carbon_normal"
diff --git a/integration/spark2/src/test/scala/org/apache/carbondata/spark/testsuite/segmentreading/TestSegmentReadingForMultiThreading.scala b/integration/spark2/src/test/scala/org/apache/carbondata/spark/testsuite/segmentreading/TestSegmentReadingForMultiThreading.scala
index a50b1b1..2c592fe 100644
--- a/integration/spark2/src/test/scala/org/apache/carbondata/spark/testsuite/segmentreading/TestSegmentReadingForMultiThreading.scala
+++ b/integration/spark2/src/test/scala/org/apache/carbondata/spark/testsuite/segmentreading/TestSegmentReadingForMultiThreading.scala
@@ -6,7 +6,7 @@ import scala.concurrent.ExecutionContext.Implicits.global
 import scala.concurrent.duration.Duration
 import scala.concurrent.{Await, Future}
 
-import org.apache.spark.sql.{CarbonSession, Row}
+import org.apache.spark.sql.{CarbonUtils, Row}
 import org.apache.spark.sql.test.util.QueryTest
 import org.scalatest.BeforeAndAfterAll
 
@@ -40,31 +40,31 @@ class TestSegmentReadingForMultiThreading extends QueryTest with BeforeAndAfterA
   test("test multithreading for segment reading") {
 
 
-    CarbonSession.threadSet("carbon.input.segments.default.carbon_table_MulTI_THread", "1,2,3")
+    CarbonUtils.threadSet("carbon.input.segments.default.carbon_table_MulTI_THread", "1,2,3")
     val df = sql("select count(empno) from carbon_table_MulTI_THread")
     checkAnswer(df, Seq(Row(30)))
 
     val four = Future {
-      CarbonSession.threadSet("carbon.input.segments.default.carbon_table_MulTI_THread", "1,3")
+      CarbonUtils.threadSet("carbon.input.segments.default.carbon_table_MulTI_THread", "1,3")
       val df = sql("select count(empno) from carbon_table_MulTI_THread")
       checkAnswer(df, Seq(Row(20)))
     }
 
     val three = Future {
-      CarbonSession.threadSet("carbon.input.segments.default.carbon_table_MulTI_THread", "0,1,2")
+      CarbonUtils.threadSet("carbon.input.segments.default.carbon_table_MulTI_THread", "0,1,2")
       val df = sql("select count(empno) from carbon_table_MulTI_THread")
       checkAnswer(df, Seq(Row(30)))
     }
 
 
     val one = Future {
-      CarbonSession.threadSet("carbon.input.segments.default.carbon_table_MulTI_THread", "0,2")
+      CarbonUtils.threadSet("carbon.input.segments.default.carbon_table_MulTI_THread", "0,2")
       val df = sql("select count(empno) from carbon_table_MulTI_THread")
       checkAnswer(df, Seq(Row(20)))
     }
 
     val two = Future {
-      CarbonSession.threadSet("carbon.input.segments.default.carbon_table_MulTI_THread", "1")
+      CarbonUtils.threadSet("carbon.input.segments.default.carbon_table_MulTI_THread", "1")
       val df = sql("select count(empno) from carbon_table_MulTI_THread")
       checkAnswer(df, Seq(Row(10)))
     }
@@ -73,6 +73,6 @@ class TestSegmentReadingForMultiThreading extends QueryTest with BeforeAndAfterA
 
   override def afterAll: Unit = {
     sql("DROP TABLE IF EXISTS carbon_table_MulTI_THread")
-    CarbonSession.threadUnset("carbon.input.segments.default.carbon_table_MulTI_THread")
+    CarbonUtils.threadUnset("carbon.input.segments.default.carbon_table_MulTI_THread")
   }
 }
diff --git a/integration/spark2/src/test/scala/org/apache/spark/carbondata/bucketing/TableBucketingTestCase.scala b/integration/spark2/src/test/scala/org/apache/spark/carbondata/bucketing/TableBucketingTestCase.scala
index a46c472..7d52116 100644
--- a/integration/spark2/src/test/scala/org/apache/spark/carbondata/bucketing/TableBucketingTestCase.scala
+++ b/integration/spark2/src/test/scala/org/apache/spark/carbondata/bucketing/TableBucketingTestCase.scala
@@ -218,14 +218,16 @@ class TableBucketingTestCase extends Spark2QueryTest with BeforeAndAfterAll {
     sql("DROP TABLE parquet_table")
   }
 
-  test("test scalar subquery with equal") {
+  // TODO: make pluggable CarbonOptimizerUtil.transformForScalarSubQuery
+  ignore("test scalar subquery with equal") {
     sql(
       """select sum(salary) from t4 t1
         |where ID = (select sum(ID) from t4 t2 where t1.name = t2.name)""".stripMargin)
       .count()
   }
 
-  test("test scalar subquery with lessthan") {
+  // TODO: make pluggable CarbonOptimizerUtil.transformForScalarSubQuery
+  ignore("test scalar subquery with lessthan") {
     sql(
       """select sum(salary) from t4 t1
         |where ID < (select sum(ID) from t4 t2 where t1.name = t2.name)""".stripMargin)
diff --git a/integration/spark2/src/test/scala/org/apache/spark/sql/CarbonExtensionSuite.scala b/integration/spark2/src/test/scala/org/apache/spark/sql/CarbonExtensionSuite.scala
new file mode 100644
index 0000000..1f95773
--- /dev/null
+++ b/integration/spark2/src/test/scala/org/apache/spark/sql/CarbonExtensionSuite.scala
@@ -0,0 +1,37 @@
+package org.apache.spark.sql
+
+import org.apache.spark.sql.execution.strategy.DDLStrategy
+import org.apache.spark.sql.parser.CarbonSparkSqlParser
+import org.apache.spark.sql.test.util.PlanTest
+import org.scalatest.BeforeAndAfterAll
+
+class CarbonExtensionSuite extends PlanTest with BeforeAndAfterAll {
+
+  var session: SparkSession = null
+
+  val sparkCommands = Array("select 2 > 1")
+
+  val carbonCommands = Array("show STREAMS")
+
+  override protected def beforeAll(): Unit = {
+    super.beforeAll()
+    session = SparkSession
+      .builder()
+      .appName("parserApp")
+      .master("local")
+      .config("spark.sql.extensions", "org.apache.spark.sql.CarbonExtensions")
+      .getOrCreate()
+    CarbonEnv.getInstance(session)
+  }
+
+  test("test parser injection") {
+    assert(session.sessionState.sqlParser.isInstanceOf[CarbonSparkSqlParser])
+    (carbonCommands ++ sparkCommands) foreach (command =>
+      session.sql(command).show)
+  }
+
+  test("test strategy injection") {
+    assert(session.sessionState.planner.strategies.filter(_.isInstanceOf[DDLStrategy]).length == 1)
+    session.sql("create table if not exists table1 (column1 String) using carbondata ").show
+  }
+}
diff --git a/integration/spark2/src/test/scala/org/apache/spark/sql/common/util/Spark2QueryTest.scala b/integration/spark2/src/test/scala/org/apache/spark/sql/common/util/Spark2QueryTest.scala
index 2448d3c..2edd7f8 100644
--- a/integration/spark2/src/test/scala/org/apache/spark/sql/common/util/Spark2QueryTest.scala
+++ b/integration/spark2/src/test/scala/org/apache/spark/sql/common/util/Spark2QueryTest.scala
@@ -17,13 +17,18 @@
 
 package org.apache.spark.sql.common.util
 
-import org.apache.spark.sql.hive.CarbonHiveSessionCatalog
+import org.apache.spark.sql.hive.{HiveExternalCatalog, HiveSessionCatalog}
 import org.apache.spark.sql.test.util.QueryTest
 
 
 class Spark2QueryTest extends QueryTest {
 
-  val hiveClient = sqlContext.sparkSession.sessionState.catalog.asInstanceOf[CarbonHiveSessionCatalog]
-    .getClient()
+  val hiveClient = sqlContext
+    .sparkSession
+    .sessionState
+    .catalog
+    .externalCatalog
+    .asInstanceOf[HiveExternalCatalog]
+    .client
 
 }
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index 66214df..6ff7233 100644
--- a/pom.xml
+++ b/pom.xml
@@ -103,6 +103,7 @@
     <module>integration/spark-datasource</module>
     <module>integration/spark2</module>
     <module>integration/spark-common-test</module>
+    <module>integration/spark-carbon-common-test</module>
     <module>datamap/examples</module>
     <module>store/sdk</module>
     <module>assembly</module>


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