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https://issues.apache.org/jira/browse/MAPREDUCE-1376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12800516#action_12800516
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Hong Tang commented on MAPREDUCE-1376:
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Nice feature to have. This would be useful for evaluating fairness or potential 
starvation problems of schedulers like CapacityScheduler.

> Support for varied user submission in Gridmix
> ---------------------------------------------
>
>                 Key: MAPREDUCE-1376
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1376
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: contrib/gridmix
>            Reporter: Chris Douglas
>            Assignee: Chris Douglas
>         Attachments: M1376-0.patch
>
>
> Gridmix currently submits all synthetic jobs as the client user. It should be 
> possible to map users in the trace to a set of users appropriate for the 
> target cluster.

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