separate jvm param for mapper and reducer
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Key: HADOOP-5684
URL: https://issues.apache.org/jira/browse/HADOOP-5684
Project: Hadoop Core
Issue Type: Improvement
Components: mapred
Reporter: Koji Noguchi
Priority: Minor
Memory footprint of mapper and reducer can differ.
It would be nice if we can pass different jvm param (mapred.child.java.opts)
for mappers and reducers.
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