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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7103) Need to fail split if SPLIT znode is deleted even before the split is completed.
Date Sat, 10 Nov 2012 08:01:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13494589#comment-13494589
] 

Hadoop QA commented on HBASE-7103:
----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12552963/7103-6088-revert.txt
  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:red}-1 javadoc{color}.  The javadoc tool appears to have generated 87 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 18 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.TestMiniClusterLoadEncoded

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/3301//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3301//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3301//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3301//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop1-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3301//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3301//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3301//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/3301//console

This message is automatically generated.
                
> Need to fail split if SPLIT znode is deleted even before the split is completed.
> --------------------------------------------------------------------------------
>
>                 Key: HBASE-7103
>                 URL: https://issues.apache.org/jira/browse/HBASE-7103
>             Project: HBase
>          Issue Type: Bug
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 0.94.3, 0.96.0
>
>         Attachments: 7103-6088-revert.txt, HBASE-7103_testcase.patch
>
>
> This came up after the following mail in dev list
> 'infinite loop of RS_ZK_REGION_SPLIT on .94.2'.
> The following is the reason for the problem
> The following steps happen
> -> Initially the parent region P1 starts splitting.
> -> The split is going on normally.
> -> Another split starts at the same time for the same region P1. (Not sure why this
started).
> -> Rollback happens seeing an already existing node.
> -> This node gets deleted in rollback and nodeDeleted Event starts.
> -> In nodeDeleted event the RIT for the region P1 gets deleted.
> -> Because of this there is no region in RIT.
> -> Now the first split gets over.  Here the problem is we try to transit the node
to SPLITTING to SPLIT. But the node even does not exist.
> But we don take any action on this.  We think it is successful.
> -> Because of this SplitRegionHandler never gets invoked.

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