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https://issues.apache.org/jira/browse/YARN-4024?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hong Zhiguo updated YARN-4024:
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Attachment: YARN-4024-v5.patch
Thanks for your comments, [~sunilg] and [~leftnoteasy]. I updated patch v5
accordingly.
Interface Resolver is left as public with @VisibleForTesting, because it's
accessed from test cases.
> 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
> Attachments: YARN-4024-draft-v2.patch, YARN-4024-draft-v3.patch,
> YARN-4024-draft.patch, YARN-4024-v4.patch, YARN-4024-v5.patch
>
>
> 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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