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https://issues.apache.org/jira/browse/MAPREDUCE-3280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13138106#comment-13138106
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Vinod Kumar Vavilapalli commented on MAPREDUCE-3280:
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I was wrong. The AM indeed already gets the user-name from the RM via env and
sets it in its own conf. The history conf also gets it correctly. I'll verify
this by removing the configuration and close this ticket if that works.
> 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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