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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2452) Delegation token cancellation shouldn't hold global JobTracker lock
Date Fri, 03 Jun 2011 21:38:47 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13044072#comment-13044072
] 

Devaraj Das commented on MAPREDUCE-2452:
----------------------------------------

Compared the number of findbugs warnings with the number of findbugs warnings for another
recent hudson run. They are the same. Not sure why this patch is triggering false findbugs
alarms. I intend to commit the patch soon.. 

> Delegation token cancellation shouldn't hold global JobTracker lock
> -------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2452
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2452
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobtracker
>    Affects Versions: 0.22.0
>            Reporter: Devaraj Das
>            Assignee: Devaraj Das
>             Fix For: 0.23.0
>
>         Attachments: cancel-delegation-token-fix-trunk.patch, cancel-delegation-token-fix-trunk.patch,
cancel-delegation-token-fix.patch, cancel-delegation-token-fix.patch, cancel-delegation-token-fix.patch
>
>
> Currently, when the JobTracker cancels a job's delegation token (at the end of the job),
it holds the global lock. This is not desired.

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