Hi Bryan,
> Do you use any collections on this column family? We've had issues in the > past with unexpectedly large partitions reported on data models with > collections, which can also generate tons of tombstones on UPDATE ( > https://issues.apache.org/jira/browse/CASSANDRA-10547) > I've been bitten by this one some time ago, too. I stopped using collections because of this. The table in question doesn't use them either. Thanks for the suggestion anyway! Tom