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Posted to yarn-issues@hadoop.apache.org by "Hong Zhiguo (JIRA)" <ji...@apache.org> on 2015/07/31 04:10:04 UTC
[jira] [Created] (YARN-4001) normalizeHostName takes too much of
execution time
Hong Zhiguo created YARN-4001:
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Summary: normalizeHostName takes too much of execution time
Key: YARN-4001
URL: https://issues.apache.org/jira/browse/YARN-4001
Project: Hadoop YARN
Issue Type: Improvement
Components: nodemanager, resourcemanager
Reporter: Hong Zhiguo
Assignee: Hong Zhiguo
Priority: Minor
For each NodeHeartbeatRequest, NetUtils.normalizeHostName is called under a lock. I did profiling for a very large cluster and found out NetUtils.normalizeHostName takes most execution time of ResourceTrackerService.nodeHeartbeat(...).
We'd better have an option to use raw IP (plus port) as the Node identity to scale for large clusters.
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