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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7698) race between RS shutdown thread and openregionhandler causes region to get stuck
Date Mon, 04 Feb 2013 19:28:14 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7698?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13570553#comment-13570553
] 

Hadoop QA commented on HBASE-7698:
----------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12567857/HBASE-7698_withtestcase_1.patch
  against trunk revision .

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

    {color:green}+1 tests included{color}.  The patch appears to include 3 new or modified
tests.

    {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:green}+1 core tests{color}.  The patch passed unit tests in .

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/4320//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/4320//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/4320//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/4320//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop1-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/4320//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/4320//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/4320//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/4320//console

This message is automatically generated.
                
> race between RS shutdown thread and openregionhandler causes region to get stuck
> --------------------------------------------------------------------------------
>
>                 Key: HBASE-7698
>                 URL: https://issues.apache.org/jira/browse/HBASE-7698
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.94.4
>            Reporter: Sergey Shelukhin
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 0.96.0, 0.94.6
>
>         Attachments: HBASE-7698.patch, HBASE-7698_withtestcase_1.patch, HBASE-7698_withtestcase_1.patch,
HBASE-7698_withtestcase.patch
>
>
> 2013-01-22 17:59:03,237 INFO  [Shutdown of org.apache.hadoop.hbase.fs.HFileSystem@5984cf08]
hbase.MiniHBaseCluster$SingleFileSystemShutdownThread(186): Hook closing fs=org.apache.hadoop.hbase.fs.HFileSystem@5984cf08
> ...
> 2013-01-22 17:59:03,411 DEBUG [RS_OPEN_REGION-10.11.2.92,50661,1358906192942-0] regionserver.HRegion(1001):
Closing IntegrationTestRebalanceAndKillServersTargeted,66666660,1358906196709.0200b366bc37c5afd1185f7d487c7dfb.:
disabling compactions &amp; flushes
> 2013-01-22 17:59:03,411 DEBUG [RS_OPEN_REGION-10.11.2.92,50661,1358906192942-0] regionserver.HRegion(1023):
Updates disabled for region IntegrationTestRebalanceAndKillServersTargeted,66666660,1358906196709.0200b366bc37c5afd1185f7d487c7dfb.
> 2013-01-22 17:59:03,415 ERROR [RS_OPEN_REGION-10.11.2.92,50661,1358906192942-0] executor.EventHandler(205):
Caught throwable while processing event M_RS_OPEN_REGION
> java.io.IOException: java.io.IOException: java.io.IOException: Filesystem closed
> 	at org.apache.hadoop.hbase.regionserver.HRegion.doClose(HRegion.java:1058)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.close(HRegion.java:974)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.close(HRegion.java:945)
> 	at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.cleanupFailedOpen(OpenRegionHandler.java:459)
> 	at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.process(OpenRegionHandler.java:143)
> 	at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:202)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> 	at java.lang.Thread.run(Thread.java:680)
> tryTransitionFromOpeningToFailedOpen or transitionToOpened below is never called and
region can get stuck.
> As an added benefit, the meta is already written by that time.

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