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HDFS-10192. Namenode safemode not coming out during failover. Contributed by Brahma Reddy Battula. 

(cherry picked from commit 221b3a8722)
This commit is contained in:
Jing Zhao 2016-04-06 10:42:59 -07:00
parent 5574f82799
commit 7cac807eb3
4 changed files with 50 additions and 2 deletions
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2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
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@ -1787,7 +1787,7 @@ public class BlockManager implements BlockStatsMXBean {
return bmSafeMode.leaveSafeMode(force);
}
void checkSafeMode() {
public void checkSafeMode() {
bmSafeMode.checkSafeMode();
}

1
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
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@ -1141,6 +1141,7 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
}
} finally {
startingActiveService = false;
blockManager.checkSafeMode();
writeUnlock();
}
}

14
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestBlockManagerSafeMode.java
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@ -65,6 +65,7 @@ public class TestBlockManagerSafeMode {
private static final long BLOCK_THRESHOLD = (long)(BLOCK_TOTAL * THRESHOLD);
private static final int EXTENSION = 1000; // 1 second
private FSNamesystem fsn;
private BlockManager bm;
private DatanodeManager dn;
private BlockManagerSafeMode bmSafeMode;
@ -89,7 +90,7 @@ public class TestBlockManagerSafeMode {
conf.setInt(DFSConfigKeys.DFS_NAMENODE_SAFEMODE_MIN_DATANODES_KEY,
DATANODE_NUM);
FSNamesystem fsn = mock(FSNamesystem.class);
fsn = mock(FSNamesystem.class);
doReturn(true).when(fsn).hasWriteLock();
doReturn(true).when(fsn).hasReadLock();
doReturn(true).when(fsn).isRunning();
@ -162,6 +163,17 @@ public class TestBlockManagerSafeMode {
setBlockSafe(BLOCK_THRESHOLD);
bmSafeMode.checkSafeMode();
assertEquals(BMSafeModeStatus.EXTENSION, getSafeModeStatus());
// should stay in PENDING_THRESHOLD during transitionToActive
doReturn(true).when(fsn).inTransitionToActive();
Whitebox.setInternalState(bmSafeMode, "extension", 0);
setSafeModeStatus(BMSafeModeStatus.PENDING_THRESHOLD);
setBlockSafe(BLOCK_THRESHOLD);
bmSafeMode.checkSafeMode();
assertEquals(BMSafeModeStatus.PENDING_THRESHOLD, getSafeModeStatus());
doReturn(false).when(fsn).inTransitionToActive();
bmSafeMode.checkSafeMode();
assertEquals(BMSafeModeStatus.OFF, getSafeModeStatus());
}
/**

35
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestHASafeMode.java
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@ -851,4 +851,39 @@ public class TestHASafeMode {
cluster.shutdown();
}
}
@Test(timeout = 60000)
public void testSafeModeExitAfterTransition() throws Exception {
DFSTestUtil.createFile(fs, new Path("/test"), 5 * BLOCK_SIZE, (short) 3,
1L);
banner("Stopping standby");
cluster.shutdownNameNode(1);
DFSTestUtil.createFile(fs, new Path("/test2"), 3 * BLOCK_SIZE, (short) 3,
1L);
// Roll edit logs to be read by standby
nn0.getRpcServer().rollEditLog();
fs.delete(new Path("/test"), true);
// Wait till the blocks are deleted from all DNs
GenericTestUtils.waitFor(new Supplier<Boolean>() {
@Override
public Boolean get() {
return cluster.getNamesystem(0).getBlockManager()
.getPendingDeletionBlocksCount() == 0;
}
}, 1000, 10000);
restartStandby();
// Wait till all the datanodes are registered.
GenericTestUtils.waitFor(new Supplier<Boolean>() {
@Override
public Boolean get() {
return cluster.getNamesystem(1).getNumLiveDataNodes() == 3;
}
}, 1000, 10000);
cluster.triggerBlockReports();
NameNodeAdapter.abortEditLogs(nn0);
cluster.shutdownNameNode(0);
banner(nn1.getNamesystem().getSafemode());
cluster.transitionToActive(1);
assertSafeMode(nn1, 3, 3, 3, 0);
}
}