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From Allen Wittenauer <awittena...@linkedin.com>
Subject Re: accounts permission on hadoop
Date Wed, 01 Sep 2010 00:28:26 GMT

On Aug 31, 2010, at 2:43 PM, Edward Capriolo wrote:

> On Tue, Aug 31, 2010 at 5:07 PM, Gang Luo <lgpublic@yahoo.com.cn> wrote:
>> Hi all,
>> I am the administrator of a hadoop cluster. I want to know how to specify a
>> group a user belong to. Or hadoop just use the group/user information from the
>> linux system it runs on? For example, if a user 'smith' belongs to a group
>> 'research' in the linux system. what is his account and group on HDFS?
>> 
>> 
> 
> Currently hadoop gets its user groups from the posix user/groups.

... based upon what the client sends, not what the server knows.
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