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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6537) Race between balancer and disable table can lead to inconsistent cluster
Date Wed, 05 Sep 2012 00:59:22 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13448315#comment-13448315
] 

Hudson commented on HBASE-6537:
-------------------------------

Integrated in HBase-0.94-security-on-Hadoop-23 #7 (See [https://builds.apache.org/job/HBase-0.94-security-on-Hadoop-23/7/])
    HBASE-6537 Race between balancer and disable table can lead to inconsistent cluster (Zhou
wenjian) (Revision 1379277)

     Result = FAILURE
larsh : 
Files : 
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java

                
> Race between balancer and disable table can lead to inconsistent cluster
> ------------------------------------------------------------------------
>
>                 Key: HBASE-6537
>                 URL: https://issues.apache.org/jira/browse/HBASE-6537
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.94.0
>            Reporter: Zhou wenjian
>            Assignee: Zhou wenjian
>             Fix For: 0.94.2
>
>         Attachments: HBASE-6537-94-v2.patch, HBASE-6537-trunk.patch, HBASE-6537-trunk-v2.patch
>
>
> Appear in 94. trunk is ok for the issue
> Balancer will collect the regionplans to move(unassign and then assign).
> before unassign, disable table appears, 
> after close the region in rs, master will delete the znode, romove region from RIT,
> and then clean the region from the online regions.
> During romoving region from RIT and cleaning out the region from the online regions.

> balancer begins to unassign, it will get a NotServingRegionException and if the table
is disabling, it will deal with the state in master and delete the znode . However the table
is disabled now, so the RIT and znode will remain. TimeoutMonitor draws a blank on it.
> It will hold back enabling the table or balancer unless restart

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