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