Luke Lu created MAPREDUCE-4399:
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Summary: Fix performance regression in shuffle
Key: MAPREDUCE-4399
URL: https://issues.apache.org/jira/browse/MAPREDUCE-4399
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: tasktracker
Affects Versions: 1.0.3, 0.20.203.0
Reporter: Luke Lu
Assignee: Luke Lu
There is a significant (up to 3x) performance regression in shuffle (vs 0.20.2)
in the Hadoop 1.x series. Most noticeable with high-end switches.
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