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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4490) Map and Reduce tasks should run as the user who submitted the job
Date Wed, 18 Feb 2009 07:49:02 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12674504#action_12674504
] 

Arun C Murthy commented on HADOOP-4490:
---------------------------------------

bq. If it is felt that this should be per TaskController, then we can easily move this to
the TaskController API.
On second thoughts - I'd go there right-away, since it means that we don't need to open it
up to 777 for mapred.local.dir if the DefaultTaskController is in effect.

bq. Introduce a TaskController.initializeJob [...] 
+1

bq. Modify TaskController.launchTaskJVM to set up permissions [...]
+1

bq. Modify TaskController.initializeTask to set up permissions for [...]
+1

bq. Modify DistributedCache.localizeCache to set up permissions for the localized files. 
[...]
+1


> 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, 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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