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From "Hemanth Yamijala (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4490) Map and Reduce tasks should run as the user who submitted the job
Date Tue, 09 Dec 2008 14:10:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12654802#action_12654802

Hemanth Yamijala commented on HADOOP-4490:

bq.CREATE_TASK_DIR owen task_20080101_0001_m_000001_1

Owen, sure this makes sense. Just one point is that I might need the job id along with the
task id. But that's still within the same spirit.

I will also make the other changes you have suggested like blocking root user.

I've also added a CLEANUP_TASK_DIR command to the executable which is now able to cleanup
the directories after task is completed. This is called from the CleanupQueue thread in task

> 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
> 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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