>> Is there anything holding you back from using it (if you would like to use >> it but currently cannot)? > > It would be nice if the output of the mapreduce job was a > MutationOutputFormat in which we could write insert/delete, but I > recall there is something on jira already albeit not sure if it was > merged.
Yep - that sounds like CASSANDRA-1101 - https://issues.apache.org/jira/browse/CASSANDRA-1101 Looks like it's being considered to be added to 0.6.x - probably 0.6.3+
