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From "Daniel Templeton (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4767) Network issues can cause persistent RM UI outage
Date Thu, 17 Mar 2016 18:47:33 GMT

    [ https://issues.apache.org/jira/browse/YARN-4767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15200150#comment-15200150
] 

Daniel Templeton commented on YARN-4767:
----------------------------------------

Nevermind.  Looks like I have a new round of checkstyle issues to resolve, and I broke some
tests.

> 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: 2.9.0
>            Reporter: Daniel Templeton
>            Assignee: Daniel Templeton
>            Priority: Critical
>         Attachments: YARN-4767.001.patch, YARN-4767.002.patch, YARN-4767.003.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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