Alexandr Balitsky created MAPREDUCE-6735:
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Summary: Performance degradation caused by MAPREDUCE-5465 and
HADOOP-12107
Key: MAPREDUCE-6735
URL: https://issues.apache.org/jira/browse/MAPREDUCE-6735
Project: Hadoop Map/Reduce
Issue Type: Bug
Reporter: Alexandr Balitsky
Two commits, MAPREDUCE-5465 and HADOOP-12107 are making Terasort on YARN 10%
slower.
Reduce phase with those commits ~5 mins
Reduce phase without ~3.5 mins
Average Reduce is taking 4mins, 16sec with those commits compared to 3mins,
48sec without.
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