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https://issues.apache.org/jira/browse/YARN-674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13821589#comment-13821589
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Vinod Kumar Vavilapalli commented on YARN-674:
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The other point is the default number of threads in the renewer. 5 is too
small, may be bump it up to existing number of RPC threads - 50 or something in
that range?
> Slow or failing DelegationToken renewals on submission itself make RM
> unavailable
> ---------------------------------------------------------------------------------
>
> Key: YARN-674
> URL: https://issues.apache.org/jira/browse/YARN-674
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Omkar Vinit Joshi
> Attachments: YARN-674.1.patch, YARN-674.2.patch, YARN-674.3.patch,
> YARN-674.4.patch, YARN-674.5.patch, YARN-674.5.patch, YARN-674.6.patch
>
>
> This was caused by YARN-280. A slow or a down NameNode for will make it look
> like RM is unavailable as it may run out of RPC handlers due to blocked
> client submissions.
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