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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-4937) MR AM handles an oversized split metainfo file poorly
Date Fri, 11 Jan 2013 21:26:12 GMT
Jason Lowe created MAPREDUCE-4937:
-------------------------------------

             Summary: MR AM handles an oversized split metainfo file poorly
                 Key: MAPREDUCE-4937
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4937
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mr-am
    Affects Versions: 0.23.5, 2.0.2-alpha
            Reporter: Jason Lowe


When an job runs with a split metainfo file that's larger than it has been configured to handle
then it just crashes.  This leaves the user with a less-than-ideal debug session since there
are no useful diagnostic messages sent to the client for this failure.  In addition it crashes
before registering/unregistering with the RM and crashes without generating history, so the
proxy URL is not very useful and there's no archived configuration to check to see what setting
the AM was using when it encountered the error.

The AM should handle this error case more gracefully and treat the failure as it does any
other failed job, with a proper unregistration from the RM and with history.

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