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? The University of Dundee is a registered Scottish Charity, No: SC015096