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Posted to hdfs-dev@hadoop.apache.org by "Tsz Wo (Nicholas), SZE (JIRA)" <ji...@apache.org> on 2014/01/09 17:00:51 UTC
[jira] [Created] (HDFS-5747) BlocksMap.getStoredBlock(..) and
BlockInfoUnderConstruction.addReplicaIfNotPresent(..) may throw
NullPointerException
Tsz Wo (Nicholas), SZE created HDFS-5747:
--------------------------------------------
Summary: BlocksMap.getStoredBlock(..) and BlockInfoUnderConstruction.addReplicaIfNotPresent(..) may throw NullPointerException
Key: HDFS-5747
URL: https://issues.apache.org/jira/browse/HDFS-5747
Project: Hadoop HDFS
Issue Type: Bug
Components: namenode
Reporter: Tsz Wo (Nicholas), SZE
Found these NPEs in [build #5849|https://builds.apache.org/job/PreCommit-HDFS-Build/5849//testReport/org.apache.hadoop.hdfs/TestPersistBlocks/TestRestartDfsWithFlush/].
- BlocksMap is accessed after close:
{code}
2014-01-09 04:28:32,350 WARN ipc.Server (Server.java:run(2060)) - IPC Server handler 2 on 58333, call org.apache.hadoop.hdfs.server.protocol.DatanodeProtocol.blockReceivedAndDeleted from 127.0.0.1:55572 Call#32 Retry#0: error: java.lang.NullPointerException
java.lang.NullPointerException
at org.apache.hadoop.hdfs.server.blockmanagement.BlocksMap.getStoredBlock(BlocksMap.java:113)
at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.processReportedBlock(BlockManager.java:1915)
at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.processAndHandleReportedBlock(BlockManager.java:2698)
at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.addBlock(BlockManager.java:2685)
at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.processIncrementalBlockReport(BlockManager.java:2759)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.processIncrementalBlockReport(FSNamesystem.java:5321)
at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.blockReceivedAndDeleted(NameNodeRpcServer.java:1018)
...
{code}
- expectedLocation can be null.
{code}
2014-01-09 04:28:35,384 WARN ipc.Server (Server.java:run(2060)) - IPC Server handler 5 on 58333, call org.apache.hadoop.hdfs.server.protocol.DatanodeProtocol.blockReport from 127.0.0.1:55583 Call#47 Retry#0: error: java.lang.NullPointerException
java.lang.NullPointerException
at org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoUnderConstruction.addReplicaIfNotPresent(BlockInfoUnderConstruction.java:331)
at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.processFirstBlockReport(BlockManager.java:1801)
at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.processReport(BlockManager.java:1645)
at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.blockReport(NameNodeRpcServer.java:987)
...
{code}
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