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From "Robert Joseph Evans (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-4423) Potential infinet fetching of map output
Date Tue, 10 Jul 2012 15:27:35 GMT
Robert Joseph Evans created MAPREDUCE-4423:

             Summary: Potential infinet fetching of map output
                 Key: MAPREDUCE-4423
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4423
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2
    Affects Versions: 0.23.3, 2.0.1-alpha, 3.0.0
            Reporter: Robert Joseph Evans
            Assignee: Robert Joseph Evans

Inside Fetcher.java there are a few cases where an error can happen and the corresponding
map task is not marked as a fetch failure.  One of these is if the Shuffle server returns
a malformed result.

MAPREDUCE-3992 makes this case a lot less common, but it is still possible.  IF the shuffle
handler always returns a malformed result, but a OK response the Fetcher will never stop trying
to fetch those results. 

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