Ahmed Radwan created MAPREDUCE-4358:
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Summary: Reducers are assigned containers before all maps are
assigned containers
Key: MAPREDUCE-4358
URL: https://issues.apache.org/jira/browse/MAPREDUCE-4358
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mrv2
Affects Versions: 2.0.0-alpha
Reporter: Ahmed Radwan
Reducers start to get containers before all maps are. We have seen this issue
and it is problematic since if there is no avaialable resources for the
remaining maps, the job will just stall where reducers are waiting for mappers
which are unable to start because there is no containers available.
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