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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 Fri, 06 Feb 2009 08:24:07 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12671049#action_12671049
] 

Hemanth Yamijala commented on HADOOP-4490:
------------------------------------------

I also have to mention that some additional work would be required in the LinuxTaskController
to sync up with changes from HADOOP-4759 that was committed yesterday, as it introduced a
new task (TaskCleanup task) which would create directories like task-attempt-id-cleanup.

However, the default path (covered by the DefaultTaskController) is not affected, and hence
there will be no regression. I am proposing that apart from this, if other things are fine,
we should commit HADOOP-4490 and then in a follow up JIRA fix the changes with respect to
HADOOP-4759. Otherwise I am seeing that HADOOP-4490 is becoming a moving target (*smile*).
Does this make sense ?

> 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
>         Attachments: hadoop-4490-design.pdf, HADOOP-4490.patch, HADOOP-4490.patch, HADOOP-4490.patch,
HADOOP-4490.patch, HADOOP-4490.patch, HADOOP-4490.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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