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From "Omkar Vinit Joshi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-112) Race in localization can cause containers to fail
Date Tue, 09 Apr 2013 08:48:17 GMT

    [ https://issues.apache.org/jira/browse/YARN-112?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13626399#comment-13626399
] 

Omkar Vinit Joshi commented on YARN-112:
----------------------------------------

Fixing test issue...
                
> Race in localization can cause containers to fail
> -------------------------------------------------
>
>                 Key: YARN-112
>                 URL: https://issues.apache.org/jira/browse/YARN-112
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>    Affects Versions: 0.23.3
>            Reporter: Jason Lowe
>            Assignee: Omkar Vinit Joshi
>             Fix For: 2.0.5-beta
>
>         Attachments: yarn-112-20130325.1.patch, yarn-112-20130325.patch, yarn-112-20130326.patch,
yarn-112-20130408.1.patch, yarn-112-20130408.patch, yarn-112.20131503.patch
>
>
> On one of our 0.23 clusters, I saw a case of two containers, corresponding to two map
tasks of a MR job, that were launched almost simultaneously on the same node.  It appears
they both tried to localize job.jar and job.xml at the same time.  One of the containers failed
when it couldn't rename the temporary job.jar directory to its final name because the target
directory wasn't empty.  Shortly afterwards the second container failed because job.xml could
not be found, presumably because the first container removed it when it cleaned up.

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