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https://issues.apache.org/jira/browse/HADOOP-4490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12670819#action_12670819
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Hemanth Yamijala commented on HADOOP-4490:
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Attached a hopefully last version of the patch. This one is extensively tested
and has fixed a couple of bugs related to incorrect assumptions about multiple
mapred local directories. Thanks to Sreekanth and Amar for help in testing
this. We're run randomwriter, sort with and without JVM reuse, and also
streaming and using distributed cache.
The test-patch results are showing a -1 on release audit which I've written to
core-dev about. I am not sure why a -1 is coming, will continue to debug that.
There's also a -1 on tests. It is difficult to write unit tests for this patch
since it requires support for multiple users.
There are a lot of log statements in the patch which should be removed before
commit. I am attaching this with the hope that someone can take a look at the
changes. Arun ?
> 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
>
>
> 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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