Yang Hao created MAPREDUCE-6176:
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Summary: Users should limit the number of an application
Key: MAPREDUCE-6176
URL: https://issues.apache.org/jira/browse/MAPREDUCE-6176
Project: Hadoop Map/Reduce
Issue Type: New Feature
Components: mr-am, mrv2
Affects Versions: 2.5.2, 2.5.1, 2.4.1, 2.5.0
Reporter: Yang Hao
Assignee: Yang Hao
As MapReduce is batch framework of calculation, so people may want to run
application A as well as application B . A good way to do so is that we can
limit the number of application's map task or reduce task. If we set
mapreduce.map.num.max as M, then the map task number will not exceed M. At the
same time, if we set mapreduce.map.num.max as R, then the reduce task number
will not exceed R
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