Alternatively schedule different types of tasks in fair share scheduler
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Key: MAPREDUCE-1198
URL: https://issues.apache.org/jira/browse/MAPREDUCE-1198
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: contrib/fair-share
Reporter: Scott Chen
Assignee: Scott Chen
Matei has mentioned in MAPREDUCE-961 that the current scheduler will first try
to launch map tasks until canLaunthTask() returns false then look for reduce
tasks. This might starve reduce task. He also mention that alternatively
schedule different types of tasks can solve this problem.
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