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https://issues.apache.org/jira/browse/YARN-4767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15543487#comment-15543487
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Karthik Kambatla commented on YARN-4767:
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+1. Checking this in.
> Network issues can cause persistent RM UI outage
> ------------------------------------------------
>
> Key: YARN-4767
> URL: https://issues.apache.org/jira/browse/YARN-4767
> Project: Hadoop YARN
> Issue Type: Bug
> Components: webapp
> Affects Versions: 2.7.2
> Reporter: Daniel Templeton
> Assignee: Daniel Templeton
> Priority: Critical
> Attachments: YARN-4767.001.patch, YARN-4767.002.patch,
> YARN-4767.003.patch, YARN-4767.004.patch, YARN-4767.005.patch,
> YARN-4767.006.patch, YARN-4767.007.patch, YARN-4767.008.patch,
> YARN-4767.009.patch, YARN-4767.010.patch, YARN-4767.011.patch
>
>
> If a network issue causes an AM web app to resolve the RM proxy's address to
> something other than what's listed in the allowed proxies list, the
> AmIpFilter will 302 redirect the RM proxy's request back to the RM proxy.
> The RM proxy will then consume all available handler threads connecting to
> itself over and over, resulting in an outage of the web UI.
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