Tom White created MAPREDUCE-4299:
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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 bug.
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