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From Allen Wittenauer <awittena...@linkedin.com>
Subject Re: how to assign each hadoop user to different group?
Date Thu, 17 Dec 2009 19:37:12 GMT
Group permissions come from id/whoami/etc. So define them that way in UNIX
and it should get carried over to Hadoop.

That said, it is probably the wrong behavior to have the default when group
resolution fails to be supergroup.


On 12/17/09 4:11 AM, "Starry SHI" <starrysl@gmail.com> wrote:

> Hi.
> 
> My Hadoop cluster (0.20.1) has multiple users. When I use different user's
> account to create a file in HDFS, I find that no matter what group the user
> belonging to in Linux, the files in HDFS indicate that they belongs to
> userX, supergroup. I wonder why all users are belonging to group
> "supergroup"? Is there any way that the users can be assigned to different
> groups in HDFS? I want to have them belong to different groups, so that the
> user belongs to group A (say, oridinary user) cannot access to group B (e.g.
> administrator group)?
> 
> Hope to hear from your solutions soon!
> 
> Starry
> 
> /* Tomorrow is another day. So is today. */


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