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From "Vinod Kumar Vavilapalli (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3280) MR AM should not read the username from configuration
Date Fri, 28 Oct 2011 06:08:32 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13138082#comment-13138082
] 

Vinod Kumar Vavilapalli commented on MAPREDUCE-3280:
----------------------------------------------------

Sure, the current problem is that AM depends on the value written out by the client. Which
is wrong, a security hole.
                
> MR AM should not read the username from configuration
> -----------------------------------------------------
>
>                 Key: MAPREDUCE-3280
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3280
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: applicationmaster, mrv2
>    Affects Versions: 0.23.0
>            Reporter: Vinod Kumar Vavilapalli
>             Fix For: 0.23.0
>
>
> MR AM reads the value for mapreduce.job.user.name from the configuration in several places.
It should instead get the app-submitter name from the RM.
> Once that is done, we can remove the default value for mapreduce.job.user.name from mapred-default.xml

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