Re: Cassandra atomicity/isolation/transaction in multithread counter updates

2012-06-17 Thread aaron morton
> I'm in a pseudo-deadlock BOOM BOOM ! :) > (N.B. The updates requires a read of current value before the update write. > Otherwise counter column can be used, but in my opinion the problem still > remain). Writes in the cassandra server do not require a read. > My simple question is: what h

Cassandra atomicity/isolation/transaction in multithread counter updates

2012-06-16 Thread Manuel Peli
I'm in a pseudo-deadlock about Cassandra and atomicity/isolation/transaction arguments. My simple question is: what happens when two (or more) threads try to update (increment) the same integer column value of the same row in a column family? I've read something about row-level isolation, but I don