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https://issues.apache.org/jira/browse/HADOOP-7987?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13190106#comment-13190106
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Todd Lipcon commented on HADOOP-7987:
-------------------------------------
I had started a thread on this same topic in September '10, where Owen vetoed
the idea. See "hadoop.job.ugi backwards compatibility":
http://markmail.org/thread/irzcppjxy35hwybj
and http://markmail.org/message/qegxf3yeq74an5hq
Would be interesting to see if his opinion has changed.
> Support setting the run-as user in unsecure mode
> ------------------------------------------------
>
> Key: HADOOP-7987
> URL: https://issues.apache.org/jira/browse/HADOOP-7987
> Project: Hadoop Common
> Issue Type: Improvement
> Components: security
> Affects Versions: 1.0.0
> Reporter: Devaraj Das
> Fix For: 1.1.0
>
>
> Some applications need to be able to perform actions (such as launch MR jobs)
> from map or reduce tasks. In earlier unsecure versions of hadoop (20.x), it
> was possible to do this by setting user.name in the configuration. But in
> 20.205 and 1.0, when running in unsecure mode, this does not work. (In secure
> mode, you can do this using the kerberos credentials).
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