Apologies : For some reason my response on the original mail keeps bouncing back, thus this new one! > From the other hand, the same article says: > "For conditional writes to work, the condition must be evaluated at all update > sites before the write can be allowed to succeed." > > This means, that when doing such an update CL=ALL must be used
Sorry, but I am confused by that entire thread! Questions:- 1. Does Cassandra implement any kind of data locking - at any granularity whether it be row/colF/Col ? 2. If the answer to 1 above is NO! - how does CL ALL prevent conflicts. Concurrent updates on exactly the same piece of data on different nodes can still mess each other up, right ? -JA
