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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-112) Race in localization can cause containers to fail
Date Wed, 19 Sep 2012 16:13:08 GMT
Jason Lowe created YARN-112:
-------------------------------

             Summary: 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


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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