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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: What does a write lock ?
Date Thu, 07 Jul 2011 18:01:44 GMT
None of the above, it uses a glorified CAS* at the column level

*http://en.wikipedia.org/wiki/Compare-and-swap

On Thu, Jul 7, 2011 at 12:51 PM, A J <s5alye@gmail.com> wrote:
> Does a write lock:
> 1. Just the columns in question for the specific row in question ?
> 2. The full row in question ?
> 3. The full CF ?
>
> I doubt read does any locks.
>
> Thanks.
>



-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com

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