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https://issues.apache.org/jira/browse/YARN-2031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13992762#comment-13992762
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Steve Loughran commented on YARN-2031:
--------------------------------------

We are currently working around this by not redirecting the portion of our web 
site under the path {{/ws}}

[SliderAmIpFilter|https://svn.apache.org/repos/asf/incubator/slider/trunk/slider-core/src/main/java/org/apache/slider/server/appmaster/web/SliderAmIpFilter.java]

Other AMs will hit the same problem, and we should have a standard fix

> YARN Proxy model doesn't support REST APIs in AMs
> -------------------------------------------------
>
>                 Key: YARN-2031
>                 URL: https://issues.apache.org/jira/browse/YARN-2031
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.4.0
>            Reporter: Steve Loughran
>
> AMs can't support REST APIs because
> # the AM filter redirects all requests to the proxy with a 302 response (not 
> 307)
> # the proxy doesn't forward PUT/POST/DELETE verbs
> Either the AM filter needs to return 307 and the proxy to forward the verbs, 
> or Am filter should not filter a REST bit of the web site



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