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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7711) rowlock release problem with thread interruptions in batchMutate
Date Tue, 29 Jan 2013 21:25:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7711?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13565827#comment-13565827
] 

Hadoop QA commented on HBASE-7711:
----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12567039/7711.txt
  against trunk revision .

    {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:green}+1 hadoop2.0{color}.  The patch compiles against the hadoop 2.0 profile.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 lineLengths{color}.  The patch does not introduce lines longer than 100

     {color:red}-1 core tests{color}.  The patch failed these unit tests:
                       org.apache.hadoop.hbase.TestZooKeeper
                  org.apache.hadoop.hbase.util.TestHBaseFsck

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/4237//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/4237//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/4237//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/4237//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/4237//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop1-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/4237//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/4237//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/4237//console

This message is automatically generated.
                
> rowlock release problem with thread interruptions in batchMutate
> ----------------------------------------------------------------
>
>                 Key: HBASE-7711
>                 URL: https://issues.apache.org/jira/browse/HBASE-7711
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Jonathan Hsieh
>            Assignee: Ted Yu
>             Fix For: 0.96.0
>
>         Attachments: 7711.txt, 7711-v2.txt
>
>
> An earlier version of snapshots would thread interrupt operations.  In longer term testing
we ran into an exception stack trace that indicated that a rowlock was taken an never released.
> {code}
> 2013-01-26 01:54:56,417 ERROR org.apache.hadoop.hbase.procedure.ProcedureMember: Propagating
foreign exception to subprocedure pe-1
> org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable via timer-java.util.Timer@1cea3151:org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable:
org.apache.hadoop.hbase.errorhandling.TimeoutException: Timeout elapsed! Source:Timeout caused
Foreign E
> xception Start:1359194035004, End:1359194095004, diff:60000, max:60000 ms
>         at org.apache.hadoop.hbase.errorhandling.ForeignException.deserialize(ForeignException.java:184)
>         at org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.abort(ZKProcedureMemberRpcs.java:321)
>         at org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.watchForAbortedProcedures(ZKProcedureMemberRpcs.java:150)
>         at org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.access$200(ZKProcedureMemberRpcs.java:56)
>         at org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs$1.nodeChildrenChanged(ZKProcedureMemberRpcs.java:112)
>         at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:315)
>         at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:519)
>         at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:495)
> Caused by: org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable: org.apache.hadoop.hbase.errorhandling.TimeoutException:
Timeout elapsed! Source:Timeout caused Foreign Exception Start:1359194035004, End:1359194095004,
diff:60000, max:60000 ms
>         at org.apache.hadoop.hbase.errorhandling.TimeoutExceptionInjector$1.run(TimeoutExceptionInjector.java:71)
>         at java.util.TimerThread.mainLoop(Timer.java:512)
>         at java.util.TimerThread.run(Timer.java:462)
> 2013-01-26 01:54:56,648 WARN org.apache.hadoop.hbase.regionserver.HRegion: Failed getting
lock in batch put, row=0001558252
> java.io.IOException: Timed out on getting lock for row=0001558252
>         at org.apache.hadoop.hbase.regionserver.HRegion.internalObtainRowLock(HRegion.java:3239)
>         at org.apache.hadoop.hbase.regionserver.HRegion.getLock(HRegion.java:3315)
>         at org.apache.hadoop.hbase.regionserver.HRegion.doMiniBatchMutation(HRegion.java:2150)
>         at org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:2021)
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.multi(HRegionServer.java:3511)
>         at sun.reflect.GeneratedMethodAccessor46.invoke(Unknown Source)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:364)
>         at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1400)
> ....
> .. every snapshot attempt that used this region for the next two days encountered this
problem.
> {code}
> Snapshots will now bypass this problem with the fix in HBASE-7703.  However, we should
make sure hbase regionserver operations are safe when interrupted.

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