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Posted to mapreduce-dev@hadoop.apache.org by "Jason Lowe (JIRA)" <ji...@apache.org> on 2013/10/15 17:30:43 UTC

[jira] [Created] (MAPREDUCE-5584) ShuffleHandler becomes unresponsive during gridmix runs and can leak file descriptors

Jason Lowe created MAPREDUCE-5584:
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             Summary: ShuffleHandler becomes unresponsive during gridmix runs and can leak file descriptors
                 Key: MAPREDUCE-5584
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5584
             Project: Hadoop Map/Reduce
          Issue Type: Bug
    Affects Versions: 2.3.0
            Reporter: Jason Lowe


While running gridmix on 2.3 we noticed that jobs are running much slower than normal.  We tracked this down to reducers having difficulties shuffling data from maps.  Details to follow.



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