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From "Tom White (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-4299) Terasort hangs with MR2 FifoScheduler
Date Thu, 31 May 2012 20:42:23 GMT
Tom White created MAPREDUCE-4299:

             Summary: Terasort hangs with MR2 FifoScheduler
                 Key: MAPREDUCE-4299
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4299
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2
    Affects Versions: 2.0.0-alpha
            Reporter: Tom White

What happens is that the number of reducers ramp up until they occupy all of the job's containers,
at which point the maps no longer make any progress and the job hangs.

When the same job is run with the CapacityScheduler it succeeds, so this looks like a FifoScheduler

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