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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8749) Potential race condition between FSUtils.renameAndSetModifyTime() and HFile/LogCleaner
Date Mon, 17 Jun 2013 12:37:21 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13685500#comment-13685500
] 

Hudson commented on HBASE-8749:
-------------------------------

Integrated in HBase-TRUNK-on-Hadoop-2.0.0 #569 (See [https://builds.apache.org/job/HBase-TRUNK-on-Hadoop-2.0.0/569/])
    HBASE-8749 Potential race condition between FSUtils.renameAndSetModifyTime() and HFile/LogCleaner
(Revision 1493670)

     Result = FAILURE
mbertozzi : 
Files : 
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/util/FSUtils.java

                
> Potential race condition between FSUtils.renameAndSetModifyTime() and HFile/LogCleaner
> --------------------------------------------------------------------------------------
>
>                 Key: HBASE-8749
>                 URL: https://issues.apache.org/jira/browse/HBASE-8749
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.95.1
>            Reporter: Ted Yu
>            Assignee: Matteo Bertozzi
>             Fix For: 0.98.0, 0.95.2, 0.94.9
>
>         Attachments: HBase-8749-0.94.txt, HBASE-8749-v0.patch
>
>
> We recently saw the following running 0.95.1 on hadoop 2.0:
> {code}
> 2013-06-11 21:51:22,199 ERROR [IPC Server handler 18 on 60000] master.HMaster: Region
server ip-10-138-2-28.ec2.internal,60020,1370887927492 reported a fatal error:
> ABORTING region server ip-10-138-2-28.ec2.internal,60020,1370887927492: IOE in log roller
> Cause:
> java.io.FileNotFoundException: File/Directory /hbase/.oldlogs/ip-10-138-2-28.ec2.internal%2C60020%2C1370887927492.1370986265468
does not exist.
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.setTimesInt(FSNamesystem.java:1488)
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.setTimes(FSNamesystem.java:1453)
> 	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.setTimes(NameNodeRpcServer.java:798)
> 	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.setTimes(ClientNamenodeProtocolServerSideTranslatorPB.java:704)
> 	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:43194)
> 	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:454)
> 	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:910)
> 	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1694)
> 	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1690)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:415)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1367)
> 	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1688)
> 	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> 	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
> 	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> 	at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
> 	at org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:90)
> 	at org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:57)
> 	at org.apache.hadoop.hdfs.DFSClient.setTimes(DFSClient.java:2097)
> 	at org.apache.hadoop.hdfs.DistributedFileSystem.setTimes(DistributedFileSystem.java:813)
> 	at org.apache.hadoop.hbase.util.FSUtils.renameAndSetModifyTime(FSUtils.java:1596)
> 	at org.apache.hadoop.hbase.regionserver.wal.FSHLog.archiveLogFile(FSHLog.java:705)
> 	at org.apache.hadoop.hbase.regionserver.wal.FSHLog.cleanOldLogs(FSHLog.java:595)
> 	at org.apache.hadoop.hbase.regionserver.wal.FSHLog.rollWriter(FSHLog.java:536)
> 	at org.apache.hadoop.hbase.regionserver.LogRoller.run(LogRoller.java:96)
> 	at java.lang.Thread.run(Thread.java:722)
> Caused by: org.apache.hadoop.ipc.RemoteException(java.io.FileNotFoundException): File/Directory
/hbase/.oldlogs/ip-10-138-2-28.ec2.internal%2C60020%2C1370887927492.1370986265468 does not
exist.
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.setTimesInt(FSNamesystem.java:1488)
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.setTimes(FSNamesystem.java:1453)
> 	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.setTimes(NameNodeRpcServer.java:798)
> 	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.setTimes(ClientNamenodeProtocolServerSideTranslatorPB.java:704)
> 	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:43194)
> 	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:454)
> 	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:910)
> 	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1694)
> 	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1690)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:415)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1367)
> 	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1688)
> 	at org.apache.hadoop.ipc.Client.call(Client.java:1164)
> 	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:202)
> 	at com.sun.proxy.$Proxy11.setTimes(Unknown Source)
> 	at sun.reflect.GeneratedMethodAccessor27.invoke(Unknown Source)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:601)
> 	at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:164)
> 	at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:83)
> 	at com.sun.proxy.$Proxy11.setTimes(Unknown Source)
> 	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.setTimes(ClientNamenodeProtocolTranslatorPB.java:685)
> 	at sun.reflect.GeneratedMethodAccessor26.invoke(Unknown Source)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:601)
> 	at org.apache.hadoop.hbase.fs.HFileSystem$1.invoke(HFileSystem.java:266)
> 	at com.sun.proxy.$Proxy12.setTimes(Unknown Source)
> 	at org.apache.hadoop.hdfs.DFSClient.setTimes(DFSClient.java:2095)
> 	... 7 more
> 2013-06-11 21:51:32,976 INFO  [main-EventThread] zookeeper.RegionServerTracker: RegionServer
ephemeral node deleted, processing expiration [ip-10-138-2-28.ec2.internal,60020,1370887927492]
> {code}
> One scenario that could have led to the above exception was that the LogCleaner thread
deleted the log file which had just been moved to .oldlogs dir before the call to fs.setTimes()
executed.
> When fs.setTimes() ran, the file was no longer there.

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