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From "omkar vinit joshi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-112) Race in localization can cause containers to fail
Date Tue, 26 Mar 2013 00:09:16 GMT

     [ https://issues.apache.org/jira/browse/YARN-112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

omkar vinit joshi updated YARN-112:
-----------------------------------

    Attachment: yarn-112-20130325.patch

Earlier patch was an older patch (without yarn-109 fix) and "patch -p0 <.." didn't work.
Merging the changes with existing codebase.
                
> 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: Bug
>          Components: nodemanager
>    Affects Versions: 0.23.3
>            Reporter: Jason Lowe
>            Assignee: omkar vinit joshi
>         Attachments: yarn-112-20130325.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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