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HDFS-8245. Standby namenode doesn't process DELETED_BLOCK if the addblock request is in edit log. Contributed by Rushabh S Shah. 

(cherry picked from commit 2d4ae3d18b)
This commit is contained in:
Kihwal Lee 2015-05-08 16:37:26 -05:00
parent 4f301f92c1
commit f264a5aeed
4 changed files with 121 additions and 7 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -466,6 +466,9 @@ Release 2.7.1 - UNRELEASED
HDFS-7894. Rolling upgrade readiness is not updated in jmx until query
command is issued. (Brahma Reddy Battula via kihwal)
HDFS-8254. Standby namenode doesn't process DELETED_BLOCK if the add block
request is in edit log. (Rushabh S Shah via kihwal)
Release 2.7.0 - 2015-04-20
INCOMPATIBLE CHANGES

24
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
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@ -2315,8 +2315,15 @@ public class BlockManager {
if (LOG.isDebugEnabled()) {
LOG.debug("Processing previouly queued message " + rbi);
}
processAndHandleReportedBlock(rbi.getStorageInfo(),
rbi.getBlock(), rbi.getReportedState(), null);
if (rbi.getReportedState() == null) {
// This is a DELETE_BLOCK request
DatanodeStorageInfo storageInfo = rbi.getStorageInfo();
removeStoredBlock(rbi.getBlock(),
storageInfo.getDatanodeDescriptor());
} else {
processAndHandleReportedBlock(rbi.getStorageInfo(),
rbi.getBlock(), rbi.getReportedState(), null);
}
}
}
@ -3019,6 +3026,17 @@ public class BlockManager {
}
}
private void removeStoredBlock(DatanodeStorageInfo storageInfo, Block block,
DatanodeDescriptor node) {
if (shouldPostponeBlocksFromFuture &&
namesystem.isGenStampInFuture(block)) {
queueReportedBlock(storageInfo, block, null,
QUEUE_REASON_FUTURE_GENSTAMP);
return;
}
removeStoredBlock(block, node);
}
/**
* Modify (block-->datanode) map. Possibly generate replication tasks, if the
* removed block is still valid.
@ -3196,7 +3214,7 @@ public class BlockManager {
for (ReceivedDeletedBlockInfo rdbi : srdb.getBlocks()) {
switch (rdbi.getStatus()) {
case DELETED_BLOCK:
removeStoredBlock(rdbi.getBlock(), node);
removeStoredBlock(storageInfo, rdbi.getBlock(), node);
deleted++;
break;
case RECEIVED_BLOCK:

97
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestBlockReplacement.java
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@ -43,6 +43,8 @@ import org.apache.hadoop.hdfs.DFSTestUtil;
import org.apache.hadoop.hdfs.DistributedFileSystem;
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.MiniDFSNNTopology;
import org.apache.hadoop.hdfs.client.BlockReportOptions;
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.protocol.HdfsConstants.DatanodeReportType;
@ -52,8 +54,11 @@ import org.apache.hadoop.hdfs.protocol.datatransfer.Sender;
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.BlockOpResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.Status;
import org.apache.hadoop.hdfs.security.token.block.BlockTokenSecretManager;
import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants;
import org.apache.hadoop.hdfs.server.namenode.NameNodeAdapter;
import org.apache.hadoop.hdfs.util.DataTransferThrottler;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.util.Time;
import org.junit.Test;
@ -342,6 +347,98 @@ public class TestBlockReplacement {
}
}
/**
* Standby namenode doesn't queue Delete block request when the add block
* request is in the edit log which are yet to be read.
* @throws Exception
*/
@Test
public void testDeletedBlockWhenAddBlockIsInEdit() throws Exception {
Configuration conf = new HdfsConfiguration();
cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(MiniDFSNNTopology.simpleHATopology())
.numDataNodes(1).build();
DFSClient client = null;
try {
cluster.waitActive();
assertEquals("Number of namenodes is not 2", 2,
cluster.getNumNameNodes());
// Transitioning the namenode 0 to active.
cluster.transitionToActive(0);
assertTrue("Namenode 0 should be in active state",
cluster.getNameNode(0).isActiveState());
assertTrue("Namenode 1 should be in standby state",
cluster.getNameNode(1).isStandbyState());
// Trigger heartbeat to mark DatanodeStorageInfo#heartbeatedSinceFailover
// to true.
DataNodeTestUtils.triggerHeartbeat(cluster.getDataNodes().get(0));
FileSystem fs = cluster.getFileSystem(0);
// Trigger blockReport to mark DatanodeStorageInfo#blockContentsStale
// to false.
cluster.getDataNodes().get(0).triggerBlockReport(
new BlockReportOptions.Factory().setIncremental(false).build());
Path fileName = new Path("/tmp.txt");
// create a file with one block
DFSTestUtil.createFile(fs, fileName, 10L, (short)1, 1234L);
DFSTestUtil.waitReplication(fs,fileName, (short)1);
client = new DFSClient(cluster.getFileSystem(0).getUri(), conf);
List<LocatedBlock> locatedBlocks = client.getNamenode().
getBlockLocations("/tmp.txt", 0, 10L).getLocatedBlocks();
assertTrue(locatedBlocks.size() == 1);
assertTrue(locatedBlocks.get(0).getLocations().length == 1);
// add a second datanode to the cluster
cluster.startDataNodes(conf, 1, true, null, null, null, null);
assertEquals("Number of datanodes should be 2", 2,
cluster.getDataNodes().size());
DataNode dn0 = cluster.getDataNodes().get(0);
DataNode dn1 = cluster.getDataNodes().get(1);
String activeNNBPId = cluster.getNamesystem(0).getBlockPoolId();
DatanodeDescriptor sourceDnDesc = NameNodeAdapter.getDatanode(
cluster.getNamesystem(0), dn0.getDNRegistrationForBP(activeNNBPId));
DatanodeDescriptor destDnDesc = NameNodeAdapter.getDatanode(
cluster.getNamesystem(0), dn1.getDNRegistrationForBP(activeNNBPId));
ExtendedBlock block = DFSTestUtil.getFirstBlock(fs, fileName);
LOG.info("replaceBlock: " + replaceBlock(block,
(DatanodeInfo)sourceDnDesc, (DatanodeInfo)sourceDnDesc,
(DatanodeInfo)destDnDesc));
// Waiting for the FsDatasetAsyncDsikService to delete the block
Thread.sleep(3000);
// Triggering the incremental block report to report the deleted block to
// namnemode
cluster.getDataNodes().get(0).triggerBlockReport(
new BlockReportOptions.Factory().setIncremental(true).build());
cluster.transitionToStandby(0);
cluster.transitionToActive(1);
assertTrue("Namenode 1 should be in active state",
cluster.getNameNode(1).isActiveState());
assertTrue("Namenode 0 should be in standby state",
cluster.getNameNode(0).isStandbyState());
client.close();
// Opening a new client for new active namenode
client = new DFSClient(cluster.getFileSystem(1).getUri(), conf);
List<LocatedBlock> locatedBlocks1 = client.getNamenode()
.getBlockLocations("/tmp.txt", 0, 10L).getLocatedBlocks();
assertEquals(1, locatedBlocks1.size());
assertEquals("The block should be only on 1 datanode ", 1,
locatedBlocks1.get(0).getLocations().length);
} finally {
IOUtils.cleanup(null, client);
cluster.shutdown();
}
}
/**
* @param args
*/

4
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestDNFencing.java
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@ -151,10 +151,6 @@ public class TestDNFencing {
banner("NN2 Metadata immediately after failover");
doMetasave(nn2);
// Even though NN2 considers the blocks over-replicated, it should
// post-pone the block invalidation because the DNs are still "stale".
assertEquals(30, nn2.getNamesystem().getPostponedMisreplicatedBlocks());
banner("Triggering heartbeats and block reports so that fencing is completed");
cluster.triggerHeartbeats();
cluster.triggerBlockReports();