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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12201) Close the writers in the MOB sweep tool
Date Wed, 08 Oct 2014 08:32:33 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14163228#comment-14163228
] 

Hadoop QA commented on HBASE-12201:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12673560/HBASE-12201-V2.diff
  against trunk revision .
  ATTACHMENT ID: 12673560

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {color:red}-1 patch{color}.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/11265//console

This message is automatically generated.

> Close the writers in the MOB sweep tool
> ---------------------------------------
>
>                 Key: HBASE-12201
>                 URL: https://issues.apache.org/jira/browse/HBASE-12201
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: hbase-11339
>            Reporter: Jingcheng Du
>            Assignee: Jingcheng Du
>            Priority: Minor
>             Fix For: hbase-11339
>
>         Attachments: HBASE-12201-V2.diff, HBASE-12201.diff
>
>
>  When running the sweep tool, we encountered such an exception.
> org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException):
No lease on /hbase/mobdir/.tmp/mobcompaction/SweepJob-SweepMapper-SweepReducer-testSweepToolExpiredNoMinVersion-data/working/names/all
(inode 46500): File does not exist. Holder DFSClient_NONMAPREDUCE_-1863270027_1 does not have
any open files.
> at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:3319)
>   at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.completeFileInternal(FSNamesystem.java:3407)
>   at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.completeFile(FSNamesystem.java:3377)
>   at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.complete(NameNodeRpcServer.java:673)
>   at org.apache.hadoop.hdfs.server.namenode.AuthorizationProviderProxyClientProtocol.complete(AuthorizationProviderProxyClientProtocol.java:219)
>   at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.complete(ClientNamenodeProtocolServerSideTranslatorPB.java:520)
>   at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
>   at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:587)
>   at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1026)
>   at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2013)
>   at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2009)
>   at java.security.AccessController.doPrivileged(Native Method)
>   at javax.security.auth.Subject.doAs(Subject.java:415)
>   at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1614)
>   at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2007)
>   at org.apache.hadoop.ipc.Client.call(Client.java:1411)
>   at org.apache.hadoop.ipc.Client.call(Client.java:1364)
>   at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
>   at com.sun.proxy.$Proxy15.complete(Unknown Source)
>   at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.complete(ClientNamenodeProtocolTranslatorPB.java:435)
>   at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
>   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>    at java.lang.reflect.Method.invoke(Method.java:606)
>    at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:187)
>    at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
>    at com.sun.proxy.$Proxy16.complete(Unknown Source)
>    at org.apache.hadoop.hdfs.DFSOutputStream.completeFile(DFSOutputStream.java:2180)
>    at org.apache.hadoop.hdfs.DFSOutputStream.close(DFSOutputStream.java:2164)
>    at org.apache.hadoop.hdfs.DFSClient.closeAllFilesBeingWritten(DFSClient.java:908)
>   at org.apache.hadoop.hdfs.DFSClient.close(DFSClient.java:925)
>   at org.apache.hadoop.hdfs.DistributedFileSystem.close(DistributedFileSystem.java:861)
>   at org.apache.hadoop.fs.FileSystem$Cache.closeAll(FileSystem.java:2687)
>   at org.apache.hadoop.fs.FileSystem$Cache$ClientFinalizer.run(FileSystem.java:2704)
>   at org.apache.hadoop.util.ShutdownHookManager$1.run(ShutdownHookManager.java:54)
> This is because we have several writers opened by fs.create(path, true) are not closed
properly.
> Meanwhile, in the current implementation, we save the temp files under sweepJobDir/working/...,
and when we remove the directory of the sweep job only the working is deleted. We should remove
the whole sweepJobDir instead.



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