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From "Markus Kemper (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SQOOP-3030) Export to Oracle using (--direct + --hcatalog + --columns) with columns having the wrong case sensitivity fails with NPE
Date Tue, 18 Oct 2016 16:37:58 GMT
Markus Kemper created SQOOP-3030:
------------------------------------

             Summary: Export to Oracle using (--direct + --hcatalog + --columns) with columns
having the wrong case sensitivity fails with NPE
                 Key: SQOOP-3030
                 URL: https://issues.apache.org/jira/browse/SQOOP-3030
             Project: Sqoop
          Issue Type: Bug
          Components: connectors/oracle, hive-integration
            Reporter: Markus Kemper


It appears that if the case of the columns in the Oracle RDBMS are not used with the Sqoop
--columns option with (export + --hcatalog + --direct) the Sqoop map task will fail with an
NPE where the non-direct path fails correct.  My test case is below, please review and let
me know if you have any questions.

Additionally it would be nice if we could detect this column case mis-match during compile
time and not submit the job only to have it fail in YARN.

TEST CASE:

STEP 01 : Create Oracle Source/Target Table

sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "drop table t1"
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "create table t1
(c1 int, c2 varchar(10))"
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "insert into t1
values (1, 'some data')"
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "select * from
t1"
-------------------------------------
| C1                   | C2         | 
-------------------------------------
| 1                    | some data  | 
-------------------------------------

STEP 02 : Import Oracle Table using Sqoop --hcatalog options

beeline -u jdbc:hive2:// -e "use default; drop table t1_text;"
sqoop import --connect $MYCONN --username $MYUSER --password $MYPSWD --table T1 --num-mappers
1 --hcatalog-database default --hcatalog-table t1_text --create-hcatalog-table --hcatalog-storage-stanza
'stored as textfile'
beeline -u jdbc:hive2:// -e "use default; select * from t1_text;"

Output:
<SNIP>
16/10/18 09:11:31 INFO hcat.SqoopHCatUtilities: Database column names projected : [c1, c2]
16/10/18 09:11:31 INFO hcat.SqoopHCatUtilities: Database column name - info map :
	c1 : [Type : 2,Precision : 38,Scale : 0]
	c2 : [Type : 12,Precision : 10,Scale : 0]
16/10/18 09:11:31 INFO hcat.SqoopHCatUtilities: Creating HCatalog table default.t1_text for
import
16/10/18 09:11:31 INFO hcat.SqoopHCatUtilities: HCatalog Create table statement: 
create table `default`.`t1_text` (
	`c1` decimal(38),
	`c2` varchar(10))
stored as textfile
<SNIP>
16/10/18 09:12:14 INFO mapreduce.ImportJobBase: Transferred 12 bytes in 34.4222 seconds (0.3486
bytes/sec)
16/10/18 09:12:14 INFO mapreduce.ImportJobBase: Retrieved 1 records.
---
+-------------+-------------+--+
| t1_text.c1  | t1_text.c2  |
+-------------+-------------+--+
| 1           | some data   |
+-------------+-------------+--+

STEP 03 : Attempt Export to Oracle using Sqoop --hcatalog and --columns options

sqoop export --connect $MYCONN --username $MYUSER --password $MYPSWD --table T2 --num-mappers
2 --hcatalog-database default --hcatalog-table t1_text --columns "c1,c2"

Output: (failure = correct)
<SNIP>
16/10/18 09:13:48 INFO hcat.SqoopHCatUtilities: Database column names projected : [c1, c2]
16/10/18 09:13:48 INFO hcat.SqoopHCatUtilities: Database column name - info map :
	c1 : [Type : 2,Precision : 38,Scale : 0]
	c2 : [Type : 12,Precision : 10,Scale : 0]
<SNIP>
16/10/18 09:13:48 INFO hive.metastore: Connected to metastore.
16/10/18 09:13:48 INFO hcat.SqoopHCatUtilities: HCatalog full table schema fields = [c1, c2]
16/10/18 09:13:49 INFO Configuration.deprecation: mapred.output.dir is deprecated. Instead,
use mapreduce.output.fileoutputformat.outputdir
16/10/18 09:13:49 INFO hcat.SqoopHCatUtilities: HCatalog table partitioning key fields = []
16/10/18 09:13:49 INFO hcat.SqoopHCatUtilities: HCatalog projected schema fields = [c1, c2]
<SNIP>
16/10/18 09:14:22 INFO mapreduce.ExportJobBase: Exported 0 records.
16/10/18 09:14:22 ERROR tool.ExportTool: Error during export: Export job failed!
---
2016-10-18 09:14:19,418 INFO [main] org.apache.hive.hcatalog.mapreduce.InternalUtil: Initializing
org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe with properties {transient_lastDdlTime=1476807097,
name=default.t1_text, serialization.null.format=\N, columns=c1,c2, serialization.lib=org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe,
serialization.format=1, columns.types=decimal(38,0),varchar(10)}
2016-10-18 09:14:19,660 INFO [Thread-12] org.apache.sqoop.mapreduce.AutoProgressMapper: Auto-progress
thread is finished. keepGoing=false
2016-10-18 09:14:19,952 ERROR [Thread-11] org.apache.sqoop.mapreduce.AsyncSqlOutputFormat:
Got exception in update thread: java.sql.SQLSyntaxErrorException: ORA-00904: "c2": invalid
identifier

STEP 03 : Attempt Export to Oracle using Sqoop --hcatalog and --columns options and Oracle
--direct

sqoop export --connect $MYCONN --username $MYUSER --password $MYPSWD --table T2 --num-mappers
2 --hcatalog-database default --hcatalog-table t1_text --columns "c1,c2" --direct

Output: (failure = not correct (NPE))
<SNIP>
16/10/18 09:17:47 INFO oracle.OraOopManagerFactory: 
**************************************************
*** Using Data Connector for Oracle and Hadoop ***
**************************************************
16/10/18 09:17:47 INFO oracle.OraOopManagerFactory: Oracle Database version: Oracle Database
11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
16/10/18 09:17:47 INFO oracle.OraOopManagerFactory: This Oracle database is not a RAC.
16/10/18 09:17:47 INFO Configuration.deprecation: mapred.map.max.attempts is deprecated. Instead,
use mapreduce.map.maxattempts
16/10/18 09:17:47 INFO tool.CodeGenTool: Beginning code generation
16/10/18 09:17:47 INFO manager.SqlManager: Executing SQL statement: SELECT "C1","C2" FROM
T2 WHERE 0=1
<SNIP>
16/10/18 09:17:50 INFO mapreduce.ExportJobBase: Configuring HCatalog for export job
16/10/18 09:17:50 INFO hcat.SqoopHCatUtilities: Configuring HCatalog specific details for
job
16/10/18 09:17:50 INFO manager.SqlManager: Executing SQL statement: SELECT "C1","C2" FROM
"T2" WHERE 1=0
16/10/18 09:17:50 INFO hcat.SqoopHCatUtilities: Database column names projected : [c1, c2]
16/10/18 09:17:50 INFO hcat.SqoopHCatUtilities: Database column name - info map :
	c1 : [Type : 2,Precision : 38,Scale : 0]
	c2 : [Type : 12,Precision : 10,Scale : 0]
<SNIP>
16/10/18 09:17:51 INFO hive.metastore: Connected to metastore.
16/10/18 09:17:52 INFO hcat.SqoopHCatUtilities: HCatalog full table schema fields = [c1, c2]
<SNIP>
16/10/18 09:18:25 INFO mapreduce.ExportJobBase: Exported 0 records.
16/10/18 09:18:25 ERROR tool.ExportTool: Error during export: Export job failed!
---
2016-10-18 09:18:23,561 INFO [main] org.apache.sqoop.manager.oracle.OraOopOutputFormatBase:
The number of rows per batch is: 100
2016-10-18 09:18:23,561 INFO [main] org.apache.sqoop.manager.oracle.OraOopOutputFormatBase:
The number of batches per commit is: 100
2016-10-18 09:18:23,721 INFO [main] org.apache.sqoop.manager.oracle.OraOopOutputFormatBase:
This record writer is connected to Oracle via the JDBC URL: 
	"oracle.jdbc.driver.T4CConnection@34133979"
	to the Oracle instance: "ORCL"
2016-10-18 09:18:23,828 INFO [main] org.apache.sqoop.manager.oracle.OraOopOracleQueries: Session
Time Zone set to GMT
2016-10-18 09:18:23,883 INFO [main] org.apache.sqoop.manager.oracle.OracleConnectionFactory:
Initializing Oracle session with SQL :
begin 
  dbms_application_info.set_module(module_name => 'Data Connector for Oracle and Hadoop',
action_name => 'export 20161018091747PDT'); 
end;
2016-10-18 09:18:23,883 WARN [main] org.apache.sqoop.manager.oracle.OracleConnectionFactory:
No Oracle 'session initialization' statements were found to execute.
Check that your oraoop-site-template.xml and/or oraoop-site.xml files are correctly installed
in the ${SQOOP_HOME}/conf directory.
2016-10-18 09:18:24,116 INFO [main] org.apache.hive.hcatalog.mapreduce.InternalUtil: Initializing
org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe with properties {transient_lastDdlTime=1476807097,
name=default.t1_text, serialization.null.format=\N, columns=c1,c2, serialization.lib=org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe,
serialization.format=1, columns.types=decimal(38,0),varchar(10)}
2016-10-18 09:18:24,345 INFO [Thread-12] org.apache.sqoop.mapreduce.AutoProgressMapper: Auto-progress
thread is finished. keepGoing=false
2016-10-18 09:18:24,357 INFO [main] org.apache.sqoop.manager.oracle.OraOopOutputFormatBase:
Batch-Mode insert statement:
insert  into "SQOOP"."T2"
("C1"
,"C2")
values
(:C1
,:C2)
2016-10-18 09:18:24,358 ERROR [main] org.apache.sqoop.manager.oracle.OraOopOutputFormatInsert:
The following error occurred during configurePreparedStatement()
java.lang.NullPointerException
	at org.apache.sqoop.manager.oracle.OraOopOutputFormatBase$OraOopDBRecordWriterBase.setBindValueAtName(OraOopOutputFormatBase.java:432)

STEP 04 : Verify Export without --direct and correct column case works

sqoop export --connect $MYCONN --username $MYUSER --password $MYPSWD --table T1 --num-mappers
2 --hcatalog-database default --hcatalog-table t1_text --columns "C1,C2" 
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "select * from
t1"

Output:
16/10/18 09:26:46 INFO mapreduce.ExportJobBase: Transferred 7.79 KB in 30.9303 seconds (257.9025
bytes/sec)
16/10/18 09:26:46 INFO mapreduce.ExportJobBase: Exported 1 records.
---
-------------------------------------
| C1                   | C2         | 
-------------------------------------
| 1                    | some data  | 
| 1                    | some data  | 
-------------------------------------

STEP 05 : Verify Export with --direct and correct column case works

sqoop export --connect $MYCONN --username $MYUSER --password $MYPSWD --table T1 --num-mappers
2 --hcatalog-database default --hcatalog-table t1_text --columns "C1,C2" --direct
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "select * from
t1"

Output:
<SNIP>
16/10/18 09:30:40 INFO oracle.OraOopManagerFactory: 
**************************************************
*** Using Data Connector for Oracle and Hadoop ***
**************************************************
<SNIP>
16/10/18 09:31:16 INFO mapreduce.ExportJobBase: Transferred 7.79 KB in 30.9987 seconds (257.333
bytes/sec)
16/10/18 09:31:16 INFO mapreduce.ExportJobBase: Exported 1 records.
---
-------------------------------------
| C1                   | C2         | 
-------------------------------------
| 1                    | some data  | 
| 1                    | some data  | 
| 1                    | some data  | 
-------------------------------------



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