Re: Atomic Operations in Cassandra

2011-12-11 Thread Sylvain Lebresne
On Sun, Dec 11, 2011 at 12:01 PM, Boris Yen wrote: > Hi Sylvain, > > "Writes under the same row key are atomic (even across column families) in > the > sense that they are either all persisted or none are." > > Is this new feature for 1.x, or it also applies to previous version of > Cassandra? It

Re: Atomic Operations in Cassandra

2011-12-11 Thread Boris Yen
Hi Sylvain, "Writes under the same row key are atomic (*even across column families*) in the sense that they are either all persisted or none are." Is this new feature for 1.x, or it also applies to previous version of Cassandra? Boris On Thu, Dec 8, 2011 at 6:40 PM, Sylvain Lebresne wrote: >

Re: Atomic Operations in Cassandra

2011-12-08 Thread Sylvain Lebresne
On Thu, Dec 8, 2011 at 12:57 AM, Christof Bornhoevd wrote: > Hi All, > > I'm using Cassandra 1.0.3 (with Hector 0.7). What is the granularity of > atomic read and write operations with Cassandra. I.e. is the insert or > update of an individual column an atomic operation (in the sense that it > eit

Atomic Operations in Cassandra

2011-12-07 Thread Christof Bornhoevd
Hi All, I'm using Cassandra 1.0.3 (with Hector 0.7). What is the granularity of atomic read and write operations with Cassandra. I.e. is the insert or update of an individual column an atomic operation (in the sense that it either fails or persists completely), or is the insert or update of an ent