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From "Jason Lowe (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-4139) Potential ResourceManager deadlock when SchedulerEventDispatcher is stopped
Date Fri, 13 Apr 2012 00:41:17 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4139?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jason Lowe updated MAPREDUCE-4139:
----------------------------------

    Target Version/s: 0.23.3
              Status: Patch Available  (was: Open)
    
> Potential ResourceManager deadlock when SchedulerEventDispatcher is stopped
> ---------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4139
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4139
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.3
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>         Attachments: MAPREDUCE-4139.patch
>
>
> When the main thread calls ResourceManager$SchedulerEventDispatcher.stop() it grabs a
lock on the object, kicks the event processor thread, and then waits for the thread to exit.
 However the interrupted event processor thread can end up trying to call the synchronized
getConfig() method which results in deadlock.

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