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https://issues.apache.org/jira/browse/HADOOP-4451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12649036#action_12649036
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Hemanth Yamijala commented on HADOOP-4451:
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Hi, I propose to close this as a duplicate of HADOOP-4490, and continue
discussions there. HADOOP-4490 is a sub-task of a larger task, and seems to
make more sense to leave it intact. Can watchers of this issue please switch to
watching the new one ? If no one has objections, I will close it tomorrow.
> Resource Manager to assume identity of user to execute task
> -----------------------------------------------------------
>
> Key: HADOOP-4451
> URL: https://issues.apache.org/jira/browse/HADOOP-4451
> Project: Hadoop Core
> Issue Type: Improvement
> Components: mapred
> Reporter: Marco Nicosia
> Fix For: 0.20.0
>
>
> In the coming resource manager, the current model is that all tasks will run
> as the same generic user (task.java is called directly by the TaskTracker).
> Instead of calling "java task.java [arguments]" allow for calling a program
> which will assume the UID (euid, gid, etc) of the calling user and call
> task.java on behalf of the TaskTracker.
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