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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-713) ResourceManager can exit unexpectedly if DNS is unavailable
Date Sat, 01 Jun 2013 02:34:21 GMT

    [ https://issues.apache.org/jira/browse/YARN-713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13671954#comment-13671954
] 

Vinod Kumar Vavilapalli commented on YARN-713:
----------------------------------------------

That, and we should do a sweep of YARN RM (and NM too?) to see where else we depend on DNS..
                
> 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
>
>
> 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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