Everything in the same key of a batch_mutate is atomic. (But not isolated.)
On Fri, Aug 6, 2010 at 2:15 PM, B. Todd Burruss <bburr...@real.com> wrote: > ok i just saw the FAQ > (http://wiki.apache.org/cassandra/FAQ#batch_mutate_atomic) > > follow up question ... > > it states that "As a special case, mutations against a single key are > atomic, but more generally no" ... i interpret that to also mean " .. > mutations against a single key in the same CF ... " > > so if i have several mutatations against a single key, but multiple > column families i assume this is not atomic? > > thx > > > On Fri, 2010-08-06 at 11:08 -0700, Todd Burruss wrote: >> if i am using batch_mutate to update/insert two columns in the same CF >> and same key, is this an atomic operation? >> >> i understand that an operation on a single key in a CF is atomic, but >> not sure if the above scenario boils down to two operations or >> considered one operation. >> >> thx >> > > > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
