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https://issues.apache.org/jira/browse/YARN-4001?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wangda Tan resolved YARN-4001.
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Resolution: Duplicate
[~zhiguohong], I found this issue after filed YARN-4024, since we have some
discussions on YARN-4024 already. I suggest to close this one as duplicated and
please feel free to assign YARN-4024 to you.
> 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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