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From Allen Wittenauer <awittena...@linkedin.com>
Subject Re: How to configure read/write/execute ACLs ?
Date Tue, 01 Dec 2009 22:17:40 GMT

On 12/1/09 10:37 AM, "ben.cotton@lehman.com" <benjamin.cotton@lehman.com>

> How do I configure Hadoop ACLs to specify a uid's  read/write/execute
> privileges?

If I parse your question correctly, you want to limit certain uids to have
only be able to read or write certain data?  That functionality doesn't
exist.  The permission system is mainly to prevent accidents; it is not real
security. [Uids are trivial to forge. See my "Hadoop 24/7" slide deck from
Apachecon EU for more on Hadoop's busted security model.]

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