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https://issues.apache.org/jira/browse/YARN-4767?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Templeton updated YARN-4767:
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Attachment: YARN-4767.007.patch
Here's a patch that cleans up those silly nested ternary operators. As soon as
we get some consensus that this approach is the right approach, I'll work on
adding tests around the redirect tagging. I agree with [~kasha] that the
current approach is hacky, but I don't see a less hacky approach at the moment
that is not overkill.
> 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
>
>
> 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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