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https://issues.apache.org/jira/browse/YARN-4024?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14698929#comment-14698929
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Hong Zhiguo commented on YARN-4024:
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Please ignore the last sentence "a better way is to have "Name" in
whitelist/blacklist, instead of "Address"". Or could someone help to delete it.
> YARN RM should avoid unnecessary resolving IP when NMs doing heartbeat
> ----------------------------------------------------------------------
>
> Key: YARN-4024
> URL: https://issues.apache.org/jira/browse/YARN-4024
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Wangda Tan
> Assignee: Hong Zhiguo
>
> Currently, YARN RM NodesListManager will resolve IP address every time when
> node doing heartbeat. When DNS server becomes slow, NM heartbeat will be
> blocked and cannot make progress.
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