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From "ramkrishna.s.vasudevan (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-4308) Race between RegionOpenedHandler and AssignmentManager
Date Wed, 23 Nov 2011 08:05:40 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4308?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

ramkrishna.s.vasudevan updated HBASE-4308:

    Attachment: HBASE-4308_2.patch

Updated patch addressing Stack's comments.
> 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, HBASE-4308_2.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
> 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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