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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HBASE-2482) regions in transition do not get reassigned by master when RS crashes
Date Mon, 03 May 2010 19:55:57 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack resolved HBASE-2482.
--------------------------

    Hadoop Flags: [Reviewed]
      Resolution: Fixed

Applied branch and trunk.  Thanks for the patch Todd.

> regions in transition do not get reassigned by master when RS crashes
> ---------------------------------------------------------------------
>
>                 Key: HBASE-2482
>                 URL: https://issues.apache.org/jira/browse/HBASE-2482
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.20.5
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Blocker
>             Fix For: 0.20.5, 0.21.0
>
>         Attachments: 2482-unittest.txt, 2482-v3-combined-patch.txt, hbase-2482.txt
>
>
> Very similar to HBASE-1928, but for the general case (not just ROOT/META):
> If a region is in transition on a RS when the RS crashes, the master does not remove
it from regionsInTransition when processing the RS shutdown. This is fairly easy to trigger
by bringing up a RS and kill -9ing it just as it starts to get regions assigned. Those regions
will get permanently lost since they're stuck in regionsInTransition and thus don't get assigned
by the metascanner.

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