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From "Mahadev konar (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3702) internal server error trying access application master via proxy with filter enabled
Date Mon, 23 Jan 2012 21:19:40 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13191459#comment-13191459
] 

Mahadev konar commented on MAPREDUCE-3702:
------------------------------------------

+1 the patch looks good to me. I committed this along with MAPREDUCE-3691 (was a mistake).
Thanks Thomas.
                
> internal server error trying access application master via proxy with filter enabled
> ------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3702
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3702
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Thomas Graves
>            Assignee: Thomas Graves
>            Priority: Critical
>             Fix For: 0.23.1
>
>         Attachments: MAPREDUCE-3702.patch, MAPREDUCE-3702.patch
>
>
> I had a hadoop.http.filter.initializers in place to do user authentication, but was purposely
trying to let it bypass authentication on certain pages.  One of those was the proxy and the
application master main page. When I then tried to go to the application master through the
proxy it throws an internal server error:
> Problem accessing /mapreduce. Reason:
>     INTERNAL_SERVER_ERROR
> Caused by:
> java.lang.NullPointerException
> 	at org.apache.hadoop.yarn.server.webproxy.amfilter.AmIpFilter.doFilter(AmIpFilter.java:100)
> 	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> 	at org.apache.hadoop.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:940)
> 	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> It looks like the problem is that AmIpFilter doesn't check for null returned from httpReq.getCookies()

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