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From "Jingcheng Du (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-12201) Close the writers in the MOB sweep tool
Date Wed, 08 Oct 2014 06:28:34 GMT
Jingcheng Du created HBASE-12201:
------------------------------------

             Summary: 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
            Reporter: Jingcheng Du
            Assignee: Jingcheng Du
            Priority: Critical
             Fix For: hbase-11339


 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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