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Date: Sun, 24 Jul 2011 04:55:09 +0000 (UTC)
From: "stack (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
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Subject: [jira] [Commented] (HBASE-4124) ZK restarted while assigning a
 region, new active HM re-assign it but the RS warned 'already online on
 this server'.
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    [ https://issues.apache.org/jira/browse/HBASE-4124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13070103#comment-13070103 ] 

stack commented on HBASE-4124:
------------------------------

hbase-3741 changes the behavior here in that now we notice if we are asked to open a region that is already open and we'll throw an exception back to the master.  I think the master will now reassign it elsewhere which is not what we want if its a RegionAlreadyInTransitionException.  This will make it so we'll not keep retrying but I think there is more to do.

> ZK restarted while assigning a region, new active HM re-assign it but the RS warned 'already online on this server'.
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-4124
>                 URL: https://issues.apache.org/jira/browse/HBASE-4124
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>            Reporter: fulin wang
>         Attachments: log.txt
>
>   Original Estimate: 0.4h
>  Remaining Estimate: 0.4h
>
> ZK restarted while assigning a region, new active HM re-assign it but the RS warned 'already online on this server'.
> Issue:
> The RS failed besause of 'already online on this server' and return; The HM can not receive the message and report 'Regions in transition timed out'.

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