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https://issues.apache.org/jira/browse/HDFS-5747?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13868214#comment-13868214
]
Arpit Agarwal commented on HDFS-5747:
-------------------------------------
Full stack trace
{code}
java.io.IOException: Failed on local exception: java.io.EOFException; Host
Details : local host is: "Arpit-MB-Pro.local/192.168.0.103"; destination host
is: "localhost":57470;
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:764)
at org.apache.hadoop.ipc.Client.call(Client.java:1410)
at org.apache.hadoop.ipc.Client.call(Client.java:1359)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
at com.sun.proxy.$Proxy12.addBlock(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:185)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:101)
at com.sun.proxy.$Proxy12.addBlock(Unknown Source)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:348)
at
org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.locateFollowingBlock(DFSOutputStream.java:1259)
at
org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1107)
at
org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:515)
Caused by: java.io.EOFException: null
at java.io.DataInputStream.readInt(DataInputStream.java:375)
at
org.apache.hadoop.ipc.Client$Connection.receiveRpcResponse(Client.java:1050)
at org.apache.hadoop.ipc.Client$Connection.run(Client.java:945)
{code}
> 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
> Assignee: Arpit Agarwal
> Attachments: HDFS-5747.01.patch
>
>
> 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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