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Date: Thu, 13 Oct 2011 23:40:12 +0000 (UTC)
From: "Robert Joseph Evans (Commented) (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
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Subject: [jira] [Commented] (MAPREDUCE-2858) MRv2 WebApp Security
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-2858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13127148#comment-13127148 ] 

Robert Joseph Evans commented on MAPREDUCE-2858:
------------------------------------------------

I did try it.  I even changed the path where the proxy was on my server so that the base was a valid URL. Did you check the URL that was actually being loaded for the image.  I think that you might have a copy of the static files on the proxy being served up. Could you try going to 
{code}
http://proxyhost:proxyport/static/hadoop-st.png 
{code}

I am just speculating, I cannot think of anything else that could be doing this.
                
> MRv2 WebApp Security
> --------------------
>
>                 Key: MAPREDUCE-2858
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2858
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: applicationmaster, mrv2, security
>    Affects Versions: 0.23.0
>            Reporter: Luke Lu
>            Assignee: Luke Lu
>            Priority: Blocker
>             Fix For: 0.23.0
>
>
> In MRv2, while the system servers (ResourceManager (RM), NodeManager (NM) and NameNode (NN)) run as "trusted"
> system users, the application masters (AM) run as users who submit the application. While this offers great flexibility
> to run multiple version of mapreduce frameworks (including their UI) on the same Hadoop cluster, it has significant
> implication for the security of webapps (Please do not discuss company specific vulnerabilities here).
> Requirements:
> # Secure authentication for AM (for app/job level ACLs).
> # Webapp security should be optional via site configuration.
> # Support existing pluggable single sign on mechanisms.
> # Should not require per app/user configuration for deployment.
> # Should not require special site-wide DNS configuration for deployment.
> This the top jira for webapp security. A design doc/notes of threat-modeling and counter measures will be posted on the wiki.

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