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Posted to yarn-dev@hadoop.apache.org by "zhangshilong (JIRA)" <ji...@apache.org> on 2016/12/06 03:49:58 UTC
[jira] [Created] (YARN-5969) FairShareComparator getResourceUsage
pool performance
zhangshilong created YARN-5969:
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Summary: FairShareComparator getResourceUsage pool performance
Key: YARN-5969
URL: https://issues.apache.org/jira/browse/YARN-5969
Project: Hadoop YARN
Issue Type: Improvement
Components: fairscheduler
Affects Versions: 2.7.1
Reporter: zhangshilong
in FairShareComparator.java, the performance of function getResourceUsage() is very pool. It will be executed above 100,000,000 times per second.
In our scene, It takes 20 seconds per minute.
A simple solution is to reduce call counts of the function.
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