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https://issues.apache.org/jira/browse/YARN-713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13894627#comment-13894627
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Karthik Kambatla commented on YARN-713:
---------------------------------------

Just stumbled upon this. [~ojoshi] - should we revisit this and fix? 

> 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
>            Assignee: Omkar Vinit Joshi
>            Priority: Critical
>         Attachments: YARN-713.09052013.1.patch, YARN-713.09062013.1.patch, 
> YARN-713.1.patch, YARN-713.2.patch, YARN-713.20130910.1.patch, 
> YARN-713.patch, YARN-713.patch, 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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