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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6611) Forcing region state offline cause double assignment
Date Fri, 19 Oct 2012 18:15:12 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13480203#comment-13480203
] 

Hadoop QA commented on HBASE-6611:
----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12550009/trunk-6611_v5.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 9 new or modified
tests.

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

    {color:red}-1 javadoc{color}.  The javadoc tool appears to have generated 82 warning messages.

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

    {color:red}-1 findbugs{color}.  The patch appears to introduce 5 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:red}-1 core tests{color}.  The patch failed these unit tests:
                       org.apache.hadoop.hbase.util.TestHBaseFsck

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/3089//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3089//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3089//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3089//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop1-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3089//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3089//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/3089//console

This message is automatically generated.
                
> Forcing region state offline cause double assignment
> ----------------------------------------------------
>
>                 Key: HBASE-6611
>                 URL: https://issues.apache.org/jira/browse/HBASE-6611
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>             Fix For: 0.96.0
>
>         Attachments: trunk-6611_v2.patch, trunk-6611_v5.patch
>
>
> In assigning a region, assignment manager forces the region state offline if it is not.
This could cause double assignment, for example, if the region is already assigned and in
the Open state, you should not just change it's state to Offline, and assign it again.
> I think this could be the root cause for all double assignments IF the region state is
reliable.
> After this loophole is closed, TestHBaseFsck should come up a different way to create
some assignment inconsistencies, for example, calling region server to open a region directly.


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