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https://issues.apache.org/jira/browse/HADOOP-4490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12697375#action_12697375
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Sreekanth Ramakrishnan commented on HADOOP-4490:
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The contrib test failures are not related to the patch.
> Map and Reduce tasks should run as the user who submitted the job
> -----------------------------------------------------------------
>
> Key: HADOOP-4490
> URL: https://issues.apache.org/jira/browse/HADOOP-4490
> Project: Hadoop Core
> Issue Type: Sub-task
> Components: mapred, security
> Reporter: Arun C Murthy
> Assignee: Hemanth Yamijala
> Fix For: 0.21.0
>
> Attachments: cluster_setup.pdf, cluster_setup.pdf,
> HADOOP-4490-1.patch, HADOOP-4490-1.patch, HADOOP-4490-2.patch,
> HADOOP-4490-3.patch, hadoop-4490-4.patch, hadoop-4490-5.patch,
> hadoop-4490-6.patch, hadoop-4490-7.patch, hadoop-4490-8.patch,
> hadoop-4490-9.patch, hadoop-4490-design.pdf, HADOOP-4490.patch,
> HADOOP-4490.patch, HADOOP-4490.patch, HADOOP-4490.patch, HADOOP-4490.patch,
> HADOOP-4490.patch, HADOOP-4490.patch, HADOOP-4490_streaming.patch
>
>
> Currently the TaskTracker spawns the map/reduce tasks, resulting in them
> running as the user who started the TaskTracker.
> For security and accounting purposes the tasks should be run as the job-owner.
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