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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4308) Race between RegionOpenedHandler and AssignmentManager
Date Tue, 22 Nov 2011 20:26:40 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13155408#comment-13155408
] 

Hadoop QA commented on HBASE-4308:
----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12504781/HBASE-4308_1.patch
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  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.

    -1 javadoc.  The javadoc tool appears to have generated -162 warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    -1 findbugs.  The patch appears to introduce 66 new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

     -1 core tests.  The patch failed these unit tests:
                       org.apache.hadoop.hbase.client.TestAdmin
                  org.apache.hadoop.hbase.replication.TestReplication
                  org.apache.hadoop.hbase.client.TestInstantSchemaChange

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/338//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/338//artifact/trunk/patchprocess/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/338//console

This message is automatically generated.
                
> Race between RegionOpenedHandler and AssignmentManager
> ------------------------------------------------------
>
>                 Key: HBASE-4308
>                 URL: https://issues.apache.org/jira/browse/HBASE-4308
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.92.0
>            Reporter: Todd Lipcon
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 0.92.0
>
>         Attachments: HBASE-4308.patch, HBASE-4308_1.patch
>
>
> When the master is processing a ZK event for REGION_OPENED, it calls delete() on the
znode before it removes the node from RegionsInTransition. If the notification of that delete
comes back into AssignmentManager before the region is removed from RIT, you see an error
like:
> 2011-08-30 17:43:29,537 WARN  [main-EventThread] master.AssignmentManager(861): Node
deleted but still in RIT: .META.,,1.1028785192 state=OPEN, ts=1314751409532, server=todd-w510,55655,1314751396840
> Not certain if it causes issues, but it's a concerning log message.

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