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Posted to yarn-issues@hadoop.apache.org by "Kihwal Lee (JIRA)" <ji...@apache.org> on 2013/05/31 20:28:20 UTC
[jira] [Created] (YARN-742) Log aggregation causes a lot of
redundant setPermission calls
Kihwal Lee created YARN-742:
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Summary: Log aggregation causes a lot of redundant setPermission calls
Key: YARN-742
URL: https://issues.apache.org/jira/browse/YARN-742
Project: Hadoop YARN
Issue Type: Bug
Components: nodemanager
Affects Versions: 2.0.4-alpha, 0.23.7
Reporter: Kihwal Lee
In one of our clusters, namenode RPC is spending 45% of its time on serving setPermission calls. Further investigation has revealed that most calls are redundantly made on /mapred/logs/<user>/logs. Also mkdirs calls are made before this.
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