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https://issues.apache.org/jira/browse/YARN-713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13677027#comment-13677027
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Thomas Graves commented on YARN-713:
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Note that this had been fixed at one time by MAPREDUCE-4295, but was lost.
> ResourceManager can exit unexpectedly if DNS is unavailable
> -----------------------------------------------------------
>
> Key: YARN-713
> URL: https://issues.apache.org/jira/browse/YARN-713
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 2.1.0-beta
> Reporter: Jason Lowe
> Priority: Critical
> Attachments: YARN-713.patch, YARN-713.patch
>
>
> As discussed in MAPREDUCE-5261, there's a possibility that a DNS outage could
> lead to an unhandled exception in the ResourceManager's AsyncDispatcher, and
> that ultimately would cause the RM to exit. The RM should not exit during
> DNS hiccups.
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