According to Jonathan Ellis talk at Cassandra 13 it does use Paxos:

http://www.youtube.com/watch?v=PcUpPR4nSr4&list=PLqcm6qE9lgKJzVvwHprow9h7KMpb5hcUU

http://www.slideshare.net/jbellis/cassandra-summit-2013-keynote

Andy

On 1 Jul 2013, at 19:40, Francisco Andrades Grassi 
<bigjoc...@gmail.com<mailto:bigjoc...@gmail.com>> wrote:

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

I believe C* uses Paxos for CAS but not completely sure?

--
Francisco Andrades Grassi
www.bigjocker.com<http://www.bigjocker.com/>
@bigjocker

On Jul 1, 2013, at 1:49 PM, "Hiller, Dean" 
<dean.hil...@nrel.gov<mailto:dean.hil...@nrel.gov>> wrote:

What does CAS stand for? And is that the row locking feature like hbase's
setAndReadWinner that you give the previous val and next val and your next
val is returned if you won otherwise the current result is returned and
you know some other node won?



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