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From "Jimmy Xiang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-6611) Forcing region state offline cause double assignment
Date Thu, 27 Sep 2012 23:59:08 GMT

     [ https://issues.apache.org/jira/browse/HBASE-6611?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jimmy Xiang updated HBASE-6611:
-------------------------------

    Status: Patch Available  (was: Open)
    
> 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
>
>
> 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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