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Posted to mapreduce-dev@hadoop.apache.org by "Alexandr Balitsky (JIRA)" <ji...@apache.org> on 2016/07/19 09:04:20 UTC
[jira] [Created] (MAPREDUCE-6735) Performance degradation caused by
MAPREDUCE-5465 and HADOOP-12107
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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