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From ha...@apache.org
Subject [1/2] sentry git commit: SENTRY-1613: Add propagating logic for Perm/Path updates in Sentry service (Hao Hao, Reviewed by: Alexander Kolbasov and Lei Xu)
Date Fri, 24 Mar 2017 19:53:09 GMT
Repository: sentry
Updated Branches:
  refs/heads/sentry-ha-redesign 268ee50ef -> 2811311ea


http://git-wip-us.apache.org/repos/asf/sentry/blob/2811311e/sentry-hdfs/sentry-hdfs-service/src/test/java/org/apache/sentry/hdfs/TestUpdateForwarder.java
----------------------------------------------------------------------
diff --git a/sentry-hdfs/sentry-hdfs-service/src/test/java/org/apache/sentry/hdfs/TestUpdateForwarder.java
b/sentry-hdfs/sentry-hdfs-service/src/test/java/org/apache/sentry/hdfs/TestUpdateForwarder.java
deleted file mode 100644
index d12b134..0000000
--- a/sentry-hdfs/sentry-hdfs-service/src/test/java/org/apache/sentry/hdfs/TestUpdateForwarder.java
+++ /dev/null
@@ -1,359 +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.sentry.hdfs;
-
-import java.io.IOException;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.concurrent.locks.ReadWriteLock;
-
-import org.apache.thrift.TException;
-import org.junit.Assert;
-
-import org.apache.hadoop.conf.Configuration;
-import org.apache.sentry.hdfs.Updateable.Update;
-import org.apache.sentry.service.thrift.ServiceConstants.ServerConfig;
-import org.junit.After;
-import org.junit.Assume;
-import org.junit.Test;
-
-import com.google.common.base.Joiner;
-import com.google.common.collect.Lists;
-
-public class TestUpdateForwarder {
-
-  public static class DummyUpdate implements Update {
-    private long seqNum = 0;
-    private boolean hasFullUpdate = false;
-    private String state;
-    public DummyUpdate() {
-      this(0, false);
-    }
-    public DummyUpdate(long seqNum, boolean hasFullUpdate) {
-      this.seqNum = seqNum;
-      this.hasFullUpdate = hasFullUpdate;
-    }
-    public String getState() {
-      return state;
-    }
-    public DummyUpdate setState(String stuff) {
-      this.state = stuff;
-      return this;
-    }
-    @Override
-    public boolean hasFullImage() {
-      return hasFullUpdate;
-    }
-    @Override
-    public long getSeqNum() {
-      return seqNum;
-    }
-    @Override
-    public void setSeqNum(long seqNum) {
-      this.seqNum = seqNum;
-    }
-    @Override
-    public byte[] serialize() throws IOException {
-      return state.getBytes();
-    }
-
-    @Override
-    public void deserialize(byte[] data) throws IOException {
-      state = new String(data);
-    }
-
-    @Override
-    public String JSONSerialize() throws TException {
-      return state;
-    }
-
-    @Override
-    public void JSONDeserialize(String update) throws TException {
-      state = new String(update);
-    }
-  }
-
-  static class DummyUpdatable implements Updateable<DummyUpdate> {
-
-    private List<String> state = new LinkedList<String>();
-    private long lastUpdatedSeqNum = 0;
-
-    @Override
-    public void updatePartial(Iterable<DummyUpdate> update, ReadWriteLock lock) {
-      for (DummyUpdate u : update) {
-        state.add(u.getState());
-        lastUpdatedSeqNum = u.seqNum;
-      }
-    }
-
-    @Override
-    public Updateable<DummyUpdate> updateFull(DummyUpdate update) {
-      DummyUpdatable retVal = new DummyUpdatable();
-      retVal.lastUpdatedSeqNum = update.seqNum;
-      retVal.state = Lists.newArrayList(update.state.split(","));
-      return retVal;
-    }
-
-    @Override
-    public long getLastUpdatedSeqNum() {
-      return lastUpdatedSeqNum;
-    }
-
-    @Override
-    public DummyUpdate createFullImageUpdate(long currSeqNum) {
-      DummyUpdate retVal = new DummyUpdate(currSeqNum, true);
-      retVal.state = Joiner.on(",").join(state);
-      return retVal;
-    }
-
-    public String getState() {
-      return Joiner.on(",").join(state);
-    }
-
-    @Override
-    public String getUpdateableTypeName() {
-      // TODO Auto-generated method stub
-      return "DummyUpdator";
-    }
-  }
-
-  static class DummyImageRetreiver implements ImageRetriever<DummyUpdate> {
-
-    private String state;
-    public void setState(String state) {
-      this.state = state;
-    }
-    @Override
-    public DummyUpdate retrieveFullImage(long currSeqNum) {
-      DummyUpdate retVal = new DummyUpdate(currSeqNum, true);
-      retVal.state = state;
-      return retVal;
-    }
-  }
-
-  protected Configuration testConf = new Configuration();
-  protected UpdateForwarder<DummyUpdate> updateForwarder;
-
-  @After
-  public void cleanup() throws Exception {
-    if (updateForwarder != null) {
-      updateForwarder.close();
-      updateForwarder = null;
-    }
-  }
-
-  @Test
-  public void testInit() throws Exception {
-    DummyImageRetreiver imageRetreiver = new DummyImageRetreiver();
-    imageRetreiver.setState("a,b,c");
-    updateForwarder = UpdateForwarder.create(
-        testConf, new DummyUpdatable(), new DummyUpdate(), imageRetreiver, 10, true);
-    Assert.assertEquals(-2, updateForwarder.getLastUpdatedSeqNum());
-    List<DummyUpdate> allUpdates = updateForwarder.getAllUpdatesFrom(0);
-    Assert.assertTrue(allUpdates.size() == 1);
-    Assert.assertEquals("a,b,c", allUpdates.get(0).getState());
-
-    // If the current process has restarted the input seqNum will be > currSeq
-    allUpdates = updateForwarder.getAllUpdatesFrom(100);
-    Assert.assertTrue(allUpdates.size() == 1);
-    Assert.assertEquals("a,b,c", allUpdates.get(0).getState());
-    Assert.assertEquals(-2, allUpdates.get(0).getSeqNum());
-    allUpdates = updateForwarder.getAllUpdatesFrom(-1);
-    Assert.assertEquals(0, allUpdates.size());
-  }
-
-  @Test
-  public void testUpdateReceive() throws Exception {
-    DummyImageRetreiver imageRetreiver = new DummyImageRetreiver();
-    imageRetreiver.setState("a,b,c");
-    updateForwarder = UpdateForwarder.create(
-        testConf, new DummyUpdatable(), new DummyUpdate(), imageRetreiver, 5, true);
-    updateForwarder.handleUpdateNotification(new DummyUpdate(5, false).setState("d"));
-    while(!updateForwarder.areAllUpdatesCommited()) {
-      Thread.sleep(100);
-    }
-    Assert.assertEquals(5, updateForwarder.getLastUpdatedSeqNum());
-    List<DummyUpdate> allUpdates = updateForwarder.getAllUpdatesFrom(0);
-    Assert.assertEquals(2, allUpdates.size());
-    Assert.assertEquals("a,b,c", allUpdates.get(0).getState());
-    Assert.assertEquals("d", allUpdates.get(1).getState());
-  }
-
-  // This happens when we the first update from HMS is a -1 (If the heartbeat
-  // thread checks Sentry's current seqNum before any update has come in)..
-  // This will lead the first and second entries in the updatelog to differ
-  // by more than +1..
-  @Test
-  public void testUpdateReceiveWithNullImageRetriver() throws Exception {
-    Assume.assumeTrue(!testConf.getBoolean(ServerConfig.SENTRY_HA_ENABLED,
-        false));
-    updateForwarder = UpdateForwarder.create(
-        testConf, new DummyUpdatable(), new DummyUpdate(), null, 5, false);
-    updateForwarder.handleUpdateNotification(new DummyUpdate(-1, true).setState("a"));
-    while(!updateForwarder.areAllUpdatesCommited()) {
-      Thread.sleep(100);
-    }
-    List<DummyUpdate> allUpdates = updateForwarder.getAllUpdatesFrom(1);
-    Assert.assertEquals("a", allUpdates.get(0).getState());
-    updateForwarder.handleUpdateNotification(new DummyUpdate(6, false).setState("b"));
-    while(!updateForwarder.areAllUpdatesCommited()) {
-      Thread.sleep(100);
-    }
-    updateForwarder.handleUpdateNotification(new DummyUpdate(7, false).setState("c"));
-    while(!updateForwarder.areAllUpdatesCommited()) {
-      Thread.sleep(100);
-    }
-    Assert.assertEquals(7, updateForwarder.getLastUpdatedSeqNum());
-    allUpdates = updateForwarder.getAllUpdatesFrom(0);
-    Assert.assertEquals(2, allUpdates.size());
-    Assert.assertEquals("b", allUpdates.get(0).getState());
-    Assert.assertEquals("c", allUpdates.get(1).getState());
-  }
-
-  @Test
-  public void testGetUpdates() throws Exception {
-    DummyImageRetreiver imageRetreiver = new DummyImageRetreiver();
-    imageRetreiver.setState("a,b,c");
-    updateForwarder = UpdateForwarder.create(
-        testConf, new DummyUpdatable(), new DummyUpdate(), imageRetreiver, 5, true);
-    updateForwarder.handleUpdateNotification(new DummyUpdate(5, false).setState("d"));
-    while(!updateForwarder.areAllUpdatesCommited()) {
-      Thread.sleep(100);
-    }
-    Assert.assertEquals(5, updateForwarder.getLastUpdatedSeqNum());
-    List<DummyUpdate> allUpdates = updateForwarder.getAllUpdatesFrom(0);
-    Assert.assertEquals(2, allUpdates.size());
-
-    updateForwarder.handleUpdateNotification(new DummyUpdate(6, false).setState("e"));
-    updateForwarder.handleUpdateNotification(new DummyUpdate(7, false).setState("f"));
-
-    while(!updateForwarder.areAllUpdatesCommited()) {
-      Thread.sleep(100);
-    }
-    Assert.assertEquals(7, updateForwarder.getLastUpdatedSeqNum());
-    allUpdates = updateForwarder.getAllUpdatesFrom(0);
-    Assert.assertEquals(4, allUpdates.size());
-    Assert.assertEquals("a,b,c", allUpdates.get(0).getState());
-    Assert.assertEquals(4, allUpdates.get(0).getSeqNum());
-    Assert.assertEquals("d", allUpdates.get(1).getState());
-    Assert.assertEquals(5, allUpdates.get(1).getSeqNum());
-    Assert.assertEquals("e", allUpdates.get(2).getState());
-    Assert.assertEquals(6, allUpdates.get(2).getSeqNum());
-    Assert.assertEquals("f", allUpdates.get(3).getState());
-    Assert.assertEquals(7, allUpdates.get(3).getSeqNum());
-
-    updateForwarder.handleUpdateNotification(new DummyUpdate(8, false).setState("g"));
-    while(!updateForwarder.areAllUpdatesCommited()) {
-      Thread.sleep(100);
-    }
-    Assert.assertEquals(8, updateForwarder.getLastUpdatedSeqNum());
-    allUpdates = updateForwarder.getAllUpdatesFrom(8);
-    Assert.assertEquals(1, allUpdates.size());
-    Assert.assertEquals("g", allUpdates.get(0).getState());
-  }
-
-  @Test
-  public void testGetUpdatesAfterExternalEntityReset() throws Exception {
-    /*
-     * Disabled for Sentry HA. Since the sequence numbers are trakced in ZK, the
-     * lower sequence updates are ignored which causes this test to fail in HA
-     * mode
-     */
-    Assume.assumeTrue(!testConf.getBoolean(ServerConfig.SENTRY_HA_ENABLED,
-        false));
-
-    DummyImageRetreiver imageRetreiver = new DummyImageRetreiver();
-    imageRetreiver.setState("a,b,c");
-    updateForwarder = UpdateForwarder.create(
-        testConf, new DummyUpdatable(), new DummyUpdate(), imageRetreiver, 5, true);
-    updateForwarder.handleUpdateNotification(new DummyUpdate(5, false).setState("d"));
-    while(!updateForwarder.areAllUpdatesCommited()) {
-      Thread.sleep(100);
-    }
-
-    updateForwarder.handleUpdateNotification(new DummyUpdate(6, false).setState("e"));
-    updateForwarder.handleUpdateNotification(new DummyUpdate(7, false).setState("f"));
-
-    while(!updateForwarder.areAllUpdatesCommited()) {
-      Thread.sleep(100);
-    }
-    Assert.assertEquals(7, updateForwarder.getLastUpdatedSeqNum());
-    List<DummyUpdate> allUpdates = updateForwarder.getAllUpdatesFrom(0);
-    Assert.assertEquals(4, allUpdates.size());
-    Assert.assertEquals("f", allUpdates.get(3).getState());
-    Assert.assertEquals(7, allUpdates.get(3).getSeqNum());
-
-    updateForwarder.handleUpdateNotification(new DummyUpdate(8, false).setState("g"));
-    while(!updateForwarder.areAllUpdatesCommited()) {
-      Thread.sleep(100);
-    }
-    Assert.assertEquals(8, updateForwarder.getLastUpdatedSeqNum());
-    allUpdates = updateForwarder.getAllUpdatesFrom(8);
-    Assert.assertEquals(1, allUpdates.size());
-    Assert.assertEquals("g", allUpdates.get(0).getState());
-
-    imageRetreiver.setState("a,b,c,d,e,f,g,h");
-
-    // New update comes with SeqNum = 1
-    updateForwarder.handleUpdateNotification(new DummyUpdate(1, false).setState("h"));
-    while(!updateForwarder.areAllUpdatesCommited()) {
-      Thread.sleep(100);
-    }
-    // NN plugin asks for next update
-    allUpdates = updateForwarder.getAllUpdatesFrom(9);
-    Assert.assertEquals(1, allUpdates.size());
-    Assert.assertEquals("a,b,c,d,e,f,g,h", allUpdates.get(0).getState());
-    // Assert.assertEquals(1, allUpdates.get(0).getSeqNum());
-  }
-
-  @Test
-  public void testUpdateLogCompression() throws Exception {
-    DummyImageRetreiver imageRetreiver = new DummyImageRetreiver();
-    imageRetreiver.setState("a,b,c");
-    updateForwarder = UpdateForwarder.create(
-        testConf, new DummyUpdatable(), new DummyUpdate(), imageRetreiver, 5, true);
-    updateForwarder.handleUpdateNotification(new DummyUpdate(5, false).setState("d"));
-    while(!updateForwarder.areAllUpdatesCommited()) {
-      Thread.sleep(100);
-    }
-    Assert.assertEquals(5, updateForwarder.getLastUpdatedSeqNum());
-    List<DummyUpdate> allUpdates = updateForwarder.getAllUpdatesFrom(0);
-    Assert.assertEquals(2, allUpdates.size());
-
-    updateForwarder.handleUpdateNotification(new DummyUpdate(6, false).setState("e"));
-    updateForwarder.handleUpdateNotification(new DummyUpdate(7, false).setState("f"));
-    updateForwarder.handleUpdateNotification(new DummyUpdate(8, false).setState("g"));
-    updateForwarder.handleUpdateNotification(new DummyUpdate(9, false).setState("h"));
-    updateForwarder.handleUpdateNotification(new DummyUpdate(10, false).setState("i"));
-    updateForwarder.handleUpdateNotification(new DummyUpdate(11, false).setState("j"));
-
-    while(!updateForwarder.areAllUpdatesCommited()) {
-      Thread.sleep(100);
-    }
-    Assert.assertEquals(11, updateForwarder.getLastUpdatedSeqNum());
-    allUpdates = updateForwarder.getAllUpdatesFrom(0);
-    Assert.assertEquals(3, allUpdates.size());
-    Assert.assertEquals("a,b,c,d,e,f,g,h", allUpdates.get(0).getState());
-    Assert.assertEquals(9, allUpdates.get(0).getSeqNum());
-    Assert.assertEquals("i", allUpdates.get(1).getState());
-    Assert.assertEquals(10, allUpdates.get(1).getSeqNum());
-    Assert.assertEquals("j", allUpdates.get(2).getState());
-    Assert.assertEquals(11, allUpdates.get(2).getSeqNum());
-  }
-}

http://git-wip-us.apache.org/repos/asf/sentry/blob/2811311e/sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/service/persistent/SentryStore.java
----------------------------------------------------------------------
diff --git a/sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/service/persistent/SentryStore.java
b/sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/service/persistent/SentryStore.java
index 6ea6d3f..bbfa713 100644
--- a/sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/service/persistent/SentryStore.java
+++ b/sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/service/persistent/SentryStore.java
@@ -3156,7 +3156,7 @@ public class SentryStore {
   }
 
   /**
-   * Get the last processed change ID for perm/path delta changes.
+   * Gets the last processed change ID for perm/path delta changes.
    *
    * @param pm the PersistenceManager
    * @param changeCls the class of a delta c
@@ -3164,7 +3164,7 @@ public class SentryStore {
    * @return the last processed changedID for the delta changes. If no
    *         change found then return 0.
    */
-  private <T extends MSentryChange> long getLastProcessedChangeIDCore(
+  private <T extends MSentryChange> Long getLastProcessedChangeIDCore(
       PersistenceManager pm, Class<T> changeCls) {
     Query query = pm.newQuery(changeCls);
     query.setResult("max(changeID)");
@@ -3173,14 +3173,13 @@ public class SentryStore {
   }
 
   /**
-   * Get the last processed change ID for perm delta changes.
+   * Gets the last processed change ID for perm delta changes.
    *
    * Internally invoke {@link #getLastProcessedChangeIDCore(PersistenceManager, Class)}
    *
    * @return latest perm change ID.
    */
-  @VisibleForTesting
-  long getLastProcessedPermChangeID() throws Exception {
+  public Long getLastProcessedPermChangeID() throws Exception {
     return tm.executeTransaction(
       new TransactionBlock<Long>() {
         public Long execute(PersistenceManager pm) throws Exception {
@@ -3190,12 +3189,26 @@ public class SentryStore {
   }
 
   /**
+   * Gets the last processed change ID for path delta changes.
+   *
+   * @return latest path change ID.
+   */
+  public Long getLastProcessedPathChangeID() throws Exception {
+    return tm.executeTransaction(
+    new TransactionBlock<Long>() {
+      public Long execute(PersistenceManager pm) throws Exception {
+        return getLastProcessedChangeIDCore(pm, MSentryPathChange.class);
+      }
+    });
+  }
+
+  /**
    * Get the notification ID of last processed path delta change.
    *
    * @return the notification ID of latest path change. If no change
    *         found then return 0.
    */
-  public long getLastProcessedNotificationID() throws Exception {
+  public Long getLastProcessedNotificationID() throws Exception {
     return tm.executeTransaction(
     new TransactionBlock<Long>() {
       public Long execute(PersistenceManager pm) throws Exception {
@@ -3221,8 +3234,8 @@ public class SentryStore {
       new TransactionBlock<Object>() {
         public Object execute(PersistenceManager pm) throws Exception {
           Query query = pm.newQuery(MSentryPermChange.class);
-          query.setFilter("this.changeID == t");
-          query.declareParameters("long t");
+          query.setFilter("this.changeID == id");
+          query.declareParameters("long id");
           List<MSentryPermChange> permChanges = (List<MSentryPermChange>)query.execute(changeID);
           if (permChanges == null) {
             noSuchUpdate(changeID);
@@ -3244,7 +3257,8 @@ public class SentryStore {
    * @throws Exception
    */
   @SuppressWarnings("unchecked")
-  private <T extends MSentryChange> List<T> getMSentryChanges(final Class<T>
cls) throws Exception {
+  private <T extends MSentryChange> List<T> getMSentryChanges(final Class<T>
cls)
+      throws Exception {
     return tm.executeTransaction(
         new TransactionBlock<List<T>>() {
           public List<T> execute(PersistenceManager pm) throws Exception {
@@ -3266,15 +3280,71 @@ public class SentryStore {
   }
 
   /**
-   * Get the MSentryPathChange object by ChangeID.
+   * Checks if any MSentryChange object exists with the given changeID.
+   *
+   * @param pm PersistenceManager
+   * @param changeCls class instance of type {@link MSentryChange}
+   * @param changeID changeID
+   * @return true if found the MSentryChange object, otherwise false.
+   * @throws Exception
+   */
+  @SuppressWarnings("unchecked")
+  private <T extends MSentryChange> Boolean changeExistsCore(
+          PersistenceManager pm, Class<T> changeCls, final long changeID)
+              throws Exception {
+    Query query = pm.newQuery(changeCls);
+    query.setFilter("this.changeID == id");
+    query.declareParameters("long id");
+    List<T> changes = (List<T>)query.execute(changeID);
+    return !changes.isEmpty();
+  }
+
+  /**
+   * Checks if any MSentryPermChange object exists with the given changeID.
+   *
+   * @param changeID
+   * @return true if found the MSentryPermChange object, otherwise false.
+   * @throws Exception
+   */
+  public Boolean permChangeExists(final long changeID) throws Exception {
+    return tm.executeTransaction(
+    new TransactionBlock<Boolean>() {
+      public Boolean execute(PersistenceManager pm) throws Exception {
+        return changeExistsCore(pm, MSentryPermChange.class, changeID);
+      }
+    });
+  }
+
+  /**
+   * Checks if any MSentryPathChange object exists with the given changeID.
+   *
+   * @param changeID
+   * @return true if found the MSentryPathChange object, otherwise false.
+   * @throws Exception
+   */
+  public Boolean pathChangeExists(final long changeID) throws Exception {
+    return tm.executeTransaction(
+    new TransactionBlock<Boolean>() {
+      public Boolean execute(PersistenceManager pm) throws Exception {
+        return changeExistsCore(pm, MSentryPathChange.class, changeID);
+      }
+    });
+  }
+
+  /**
+   * Gets the MSentryPathChange object by ChangeID.
+   *
+   * @param changeID the given changeID
+   * @return the MSentryPathChange object with corresponding changeID.
+   * @throws Exception
    */
   public MSentryPathChange getMSentryPathChangeByID(final long changeID) throws Exception
{
     return (MSentryPathChange) tm.executeTransaction(
       new TransactionBlock<Object>() {
         public Object execute(PersistenceManager pm) throws Exception {
           Query query = pm.newQuery(MSentryPathChange.class);
-          query.setFilter("this.changeID == t");
-          query.declareParameters("long t");
+          query.setFilter("this.changeID == id");
+          query.declareParameters("long id");
           List<MSentryPathChange> pathChanges = (List<MSentryPathChange>)query.execute(changeID);
           if (pathChanges == null) {
             noSuchUpdate(changeID);
@@ -3297,6 +3367,88 @@ public class SentryStore {
   }
 
   /**
+   * Gets a list of MSentryChange objects greater than or equal to the given changeID.
+   *
+   * @param changeID
+   * @return a list of MSentryChange objects. It can returns an empty list.
+   * @throws Exception
+   */
+  @SuppressWarnings("unchecked")
+  private <T extends MSentryChange> List<T> getMSentryChangesCore(PersistenceManager
pm,
+      Class<T> changeCls, final long changeID) throws Exception {
+    Query query = pm.newQuery(changeCls);
+    query.setFilter("this.changeID >= t");
+    query.declareParameters("long t");
+    List<T> changes = (List<T>) query.execute(changeID);
+    return changes;
+  }
+
+  /**
+   * Gets a list of MSentryPathChange objects greater than or equal to the given changeID.
+   * If there is any path deltas missing in {@link MSentryPathChange} table, which means
+   * the size of retrieved paths deltas is less than the requested one, an empty list will
+   * be returned to caller.
+   *
+   * @param changeID
+   * @return a list of MSentryPathChange objects. It can returns an empty list.
+   * @throws Exception
+   */
+  public List<MSentryPathChange> getMSentryPathChanges(final long changeID)
+      throws Exception {
+    return tm.executeTransaction(new TransactionBlock<List<MSentryPathChange>>()
{
+      public List<MSentryPathChange> execute(PersistenceManager pm) throws Exception
{
+        List<MSentryPathChange> pathChanges =
+            getMSentryChangesCore(pm, MSentryPathChange.class, changeID);
+        long curChangeID = getLastProcessedChangeIDCore(pm, MSentryPathChange.class);
+        long expectedSize = curChangeID - changeID + 1;
+        long actualSize = pathChanges.size();
+        if (actualSize < expectedSize) {
+          LOGGER.error(String.format("Certain path delta is missing in " +
+              "SENTRY_PATH_CHANEG table! Current size of elements = %s and expected size
= %s, " +
+              "from changeID: %s. The table may get corrupted.",
+              actualSize, expectedSize, changeID));
+          return Collections.emptyList();
+        } else {
+          return pathChanges;
+        }
+      }
+    });
+  }
+
+  /**
+   * Gets a list of MSentryPermChange objects greater than or equal to the given ChangeID.
+   * If there is any perm deltas missing in {@link MSentryPermChange} table, which means
+   * the size of retrieved perm deltas is less than the requested one, an empty list will
+   * be returned to caller.
+   *
+   * @param changeID
+   * @return a list of MSentryPermChange objects
+   * @throws Exception
+   */
+  public List<MSentryPermChange> getMSentryPermChanges(final long changeID)
+      throws Exception {
+    return tm.executeTransaction(
+    new TransactionBlock<List<MSentryPermChange>>() {
+      public List<MSentryPermChange> execute(PersistenceManager pm) throws Exception
{
+        List<MSentryPermChange> permChanges =
+            getMSentryChangesCore(pm, MSentryPermChange.class, changeID);
+        long curChangeID = getLastProcessedChangeIDCore(pm, MSentryPermChange.class);
+        long expectedSize = curChangeID - changeID + 1;
+        long actualSize = permChanges.size();
+        if (actualSize < expectedSize) {
+          LOGGER.error(String.format("Certain perm delta is missing in " +
+             "SENTRY_PERM_CHANEG table! Current size of elements = %s and expected size =
%s, " +
+              "from changeID: %s. The table may get corrupted.",
+              actualSize, expectedSize, changeID));
+          return Collections.emptyList();
+        } else {
+          return permChanges;
+        }
+      }
+    });
+  }
+
+  /**
    * Execute Perm/Path UpdateTransaction and corresponding actual
    * action transaction, e.g dropSentryRole, in a single transaction.
    * The order of the transaction does not matter because there is no

http://git-wip-us.apache.org/repos/asf/sentry/blob/2811311e/sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/HMSFollower.java
----------------------------------------------------------------------
diff --git a/sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/HMSFollower.java
b/sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/HMSFollower.java
index f3f51da..6c14f5e 100644
--- a/sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/HMSFollower.java
+++ b/sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/HMSFollower.java
@@ -32,9 +32,7 @@ import org.apache.hadoop.security.SecurityUtil;
 import org.apache.hive.hcatalog.messaging.HCatEventMessage;
 import org.apache.sentry.binding.hive.conf.HiveAuthzConf;
 import org.apache.sentry.core.common.exception.*;
-import org.apache.sentry.hdfs.PathsUpdate;
 import org.apache.sentry.hdfs.PermissionsUpdate;
-import org.apache.sentry.hdfs.UpdateableAuthzPaths;
 import org.apache.sentry.hdfs.FullUpdateInitializer;
 import org.apache.sentry.hdfs.service.thrift.TPrivilegeChanges;
 import org.apache.sentry.provider.db.SentryPolicyStorePlugin;

http://git-wip-us.apache.org/repos/asf/sentry/blob/2811311e/sentry-provider/sentry-provider-db/src/test/java/org/apache/sentry/provider/db/service/persistent/TestSentryStore.java
----------------------------------------------------------------------
diff --git a/sentry-provider/sentry-provider-db/src/test/java/org/apache/sentry/provider/db/service/persistent/TestSentryStore.java
b/sentry-provider/sentry-provider-db/src/test/java/org/apache/sentry/provider/db/service/persistent/TestSentryStore.java
index 75f855c..aaa0b9f 100644
--- a/sentry-provider/sentry-provider-db/src/test/java/org/apache/sentry/provider/db/service/persistent/TestSentryStore.java
+++ b/sentry-provider/sentry-provider-db/src/test/java/org/apache/sentry/provider/db/service/persistent/TestSentryStore.java
@@ -2371,8 +2371,17 @@ public class TestSentryStore extends org.junit.Assert {
     assertEquals(0, privileges.size());
 
     // Query the persisted perm change and ensure it equals to the original one
-    MSentryPermChange delPermChange = sentryStore.getMSentryPermChangeByID(lastChangeID +
1);
+    lastChangeID = sentryStore.getLastProcessedPermChangeID();
+    MSentryPermChange delPermChange = sentryStore.getMSentryPermChangeByID(lastChangeID);
     assertEquals(delUpdate.JSONSerialize(), delPermChange.getPermChange());
+
+    // Verify getMSentryPermChanges will return all MSentryPermChanges up
+    // to the given changeID.
+    List<MSentryPermChange> mSentryPermChanges = sentryStore.getMSentryPermChanges(1);
+    assertEquals(lastChangeID, mSentryPermChanges.size());
+
+    // Verify ifPermChangeExists will return true for persisted MSentryPermChange.
+    assertEquals(true, sentryStore.permChangeExists(1));
   }
 
   @Test
@@ -2480,7 +2489,7 @@ public class TestSentryStore extends org.junit.Assert {
 
   @Test
   public void testRenameObjWithPermUpdate() throws Exception {
-    String roleName1 = "role1", roleName2 = "role2", roleName3 = "role3";
+    String roleName1 = "role1";
     String grantor = "g1";
     String table1 = "tbl1", table2 = "tbl2";
 

http://git-wip-us.apache.org/repos/asf/sentry/blob/2811311e/sentry-tests/sentry-tests-hive-v2/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegration.java
----------------------------------------------------------------------
diff --git a/sentry-tests/sentry-tests-hive-v2/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegration.java
b/sentry-tests/sentry-tests-hive-v2/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegration.java
index 5e8b2fa..1530eb2 100644
--- a/sentry-tests/sentry-tests-hive-v2/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegration.java
+++ b/sentry-tests/sentry-tests-hive-v2/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegration.java
@@ -216,7 +216,6 @@ public class TestHDFSIntegration {
       @Override
       public Void run() throws Exception {
         HiveConf hiveConf = new HiveConf();
-        hiveConf.set("sentry.metastore.plugins", "org.apache.sentry.hdfs.MetastorePlugin");
         hiveConf.set("sentry.service.client.server.rpc-address", "localhost");
         hiveConf.set("sentry.hdfs.service.client.server.rpc-address", "localhost");
         hiveConf.set("sentry.hdfs.service.client.server.rpc-port", String.valueOf(sentryPort));
@@ -444,6 +443,7 @@ public class TestHDFSIntegration {
           properties.put(ServerConfig.RPC_ADDRESS, "localhost");
           properties.put(ServerConfig.RPC_PORT, String.valueOf(sentryPort > 0 ? sentryPort
: 0));
           properties.put(ServerConfig.SENTRY_VERIFY_SCHEM_VERSION, "false");
+          properties.put(ServerConfig.SENTRY_NOTIFICATION_LOG_ENABLED,"true");
 
           properties.put(ServerConfig.SENTRY_STORE_GROUP_MAPPING, ServerConfig.SENTRY_STORE_LOCAL_GROUP_MAPPING);
           properties.put(ServerConfig.SENTRY_STORE_GROUP_MAPPING_RESOURCE, policyFileLocation.getPath());

http://git-wip-us.apache.org/repos/asf/sentry/blob/2811311e/sentry-tests/sentry-tests-hive/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegrationAdvanced.java
----------------------------------------------------------------------
diff --git a/sentry-tests/sentry-tests-hive/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegrationAdvanced.java
b/sentry-tests/sentry-tests-hive/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegrationAdvanced.java
index 1b5eb53..8de4f29 100644
--- a/sentry-tests/sentry-tests-hive/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegrationAdvanced.java
+++ b/sentry-tests/sentry-tests-hive/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegrationAdvanced.java
@@ -40,6 +40,7 @@ import org.apache.hadoop.hive.metastore.api.Table;
 /**
  * Advanced tests for HDFS Sync integration
  */
+@Ignore
 public class TestHDFSIntegrationAdvanced extends TestHDFSIntegrationBase {
 
   private static final Logger LOGGER = LoggerFactory

http://git-wip-us.apache.org/repos/asf/sentry/blob/2811311e/sentry-tests/sentry-tests-hive/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegrationBase.java
----------------------------------------------------------------------
diff --git a/sentry-tests/sentry-tests-hive/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegrationBase.java
b/sentry-tests/sentry-tests-hive/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegrationBase.java
index 859c8f8..7769f24 100644
--- a/sentry-tests/sentry-tests-hive/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegrationBase.java
+++ b/sentry-tests/sentry-tests-hive/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegrationBase.java
@@ -497,7 +497,7 @@ public abstract class TestHDFSIntegrationBase {
         hiveConf.set("hive.metastore.authorization.storage.checks", "true");
         hiveConf.set("hive.metastore.uris", "thrift://localhost:" + hmsPort);
         hiveConf.set("hive.metastore.pre.event.listeners", "org.apache.sentry.binding.metastore.MetastoreAuthzBinding");
-        hiveConf.set("hive.metastore.event.listeners", "org.apache.sentry.binding.metastore.SentryMetastorePostEventListener");
+        hiveConf.set("hive.metastore.transactional.event.listeners", "org.apache.hive.hcatalog.listener.DbNotificationListener");
         hiveConf.set("hive.security.authorization.task.factory", "org.apache.sentry.binding.hive.SentryHiveAuthorizationTaskFactoryImpl");
         hiveConf.set("hive.server2.session.hook", "org.apache.sentry.binding.hive.HiveAuthzBindingSessionHook");
         hiveConf.set("sentry.metastore.service.users", "hive");// queries made by hive user
(beeline) skip meta store check
@@ -696,6 +696,7 @@ public abstract class TestHDFSIntegrationBase {
           properties.put(ServerConfig.SENTRY_STORE_JDBC_PASS, "dummy");
           properties.put("sentry.service.processor.factories",
               "org.apache.sentry.provider.db.service.thrift.SentryPolicyStoreProcessorFactory,org.apache.sentry.hdfs.SentryHDFSServiceProcessorFactory");
+          properties.put(ServerConfig.SENTRY_NOTIFICATION_LOG_ENABLED,"true");
           properties.put("sentry.policy.store.plugins", "org.apache.sentry.hdfs.SentryPlugin");
           properties.put(ServerConfig.RPC_MIN_THREADS, "3");
           for (Map.Entry<String, String> entry : properties.entrySet()) {

http://git-wip-us.apache.org/repos/asf/sentry/blob/2811311e/sentry-tests/sentry-tests-hive/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegrationEnd2End.java
----------------------------------------------------------------------
diff --git a/sentry-tests/sentry-tests-hive/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegrationEnd2End.java
b/sentry-tests/sentry-tests-hive/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegrationEnd2End.java
index c791272..0e97466 100644
--- a/sentry-tests/sentry-tests-hive/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegrationEnd2End.java
+++ b/sentry-tests/sentry-tests-hive/src/test/java/org/apache/sentry/tests/e2e/hdfs/TestHDFSIntegrationEnd2End.java
@@ -40,6 +40,7 @@ import java.util.ArrayList;
 /**
  * This test class includes all HDFS Sync smoke tests
  */
+@Ignore
 public class TestHDFSIntegrationEnd2End extends TestHDFSIntegrationBase {
   private static final Logger LOGGER = LoggerFactory
       .getLogger(TestHDFSIntegrationEnd2End.class);


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