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From "Vinod Kumar Vavilapalli (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-3846) Restarted+Recovered AM hangs in some corner cases
Date Tue, 14 Feb 2012 00:14:59 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-3846?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vinod Kumar Vavilapalli updated MAPREDUCE-3846:
-----------------------------------------------

      Resolution: Fixed
    Release Note: Addressed MR AM hanging issues during AM restart and then the recovery.
          Status: Resolved  (was: Patch Available)

I just committed this to trunk, branch-0.23 and branch-0.23.1.
                
> Restarted+Recovered AM hangs in some corner cases
> -------------------------------------------------
>
>                 Key: MAPREDUCE-3846
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3846
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Vinod Kumar Vavilapalli
>            Assignee: Vinod Kumar Vavilapalli
>            Priority: Critical
>             Fix For: 0.23.1
>
>         Attachments: MAPREDUCE-3846-20120210.txt, MAPREDUCE-3846-20120210.txt, MAPREDUCE-3846-20120213.txt
>
>
> [~karams] found this while testing AM restart/recovery feature. After the first generation
AM crashes (manually killed by kill -9), the second generation AM starts, but hangs after
a while.

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