The design document that is referenced on the Cassandra wiki page ( http://wiki.apache.org/cassandra/Counters) describes the Counters in Cassandra as non-atomic ( https://issues.apache.org/jira/secure/attachment/12459754/Partitionedcountersdesigndoc.pdf). However, the DataStax post on counters ( http://www.datastax.com/dev/blog/whats-new-in-cassandra-0-8-part-2-counters) suggests that they are atomic. My impression is that the design document is outdated (Nov2010). Can someone confirm or deny that these Counters are atomic?
-- Salvador Fuentes Jr.
