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https://issues.apache.org/jira/browse/YARN-1811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13930802#comment-13930802
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Robert Kanter commented on YARN-1811:
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{quote}
IAC, I think the correct fix is to change AMIPFilter to accept incoming
requests either from the web-app-proxy if it is externally configured, or from
any of the RMs in the rm-id list. Today it depends on configuration anyways, so
making it depend on more configuration is not a bad thing. Even so, as per my
comment above, let's make sure that only AMIPFilter depends on such a new util
method which looks for web-app-proxy||all RMs.
{quote}
Ok, I'll take another look at this and try to figure out a good way of giving
AmIpFilter the list of web-app-proxy||all RMs; and I can make it as a new
method. If we do this, then I don't think we'll need YARN-1822.
{quote}
The code that is removed from TestRMHA shouldn't be removed. It is directly
submitting apps using RM handle which won't work for standby RM.
{quote}
I tried doing that to the standby RM, and it didn't work properly, but it also
didn't throw an Exception, which is what the code is checking. As is, it's not
100% correct. Perhaps that's better saved for another JIRA; plus, against the
standby RM, we should have similar code that it checks that it doesn't work.
> RM HA: AM link broken if the AM is on nodes other than RM
> ---------------------------------------------------------
>
> Key: YARN-1811
> URL: https://issues.apache.org/jira/browse/YARN-1811
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Affects Versions: 2.3.0
> Reporter: Robert Kanter
> Assignee: Robert Kanter
> Attachments: YARN-1811.patch, YARN-1811.patch
>
>
> When using RM HA, if you click on the "Application Master" link in the RM web
> UI while the job is running, you get an Error 500:
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