On Nov 11, 2012, at 12:01 AM, Binh Nguyen <binhn...@gmail.com> wrote:
> FYI: Repair does not remove tombstones. To remove tombstones you need to run > compaction. > If you have a lot of data then make sure you run compaction on all nodes > before running repair. We had a big trouble with our system regarding > tombstone and it took us long time to figure out the reason. It turned out > that repair process also transfers TTLed data (compaction is not triggered > yet) to the other nodes even that data was removed from the other nodes in > the compaction phase before that. > Aren't compactions triggered automatically? At least minor compactions. Also, I read this in http://www.datastax.com/docs/1.1/operations/tuning#tuning-compaction : "After running a major compaction, automatic minor compactions are no longer triggered, frequently requiring you to manually run major compactions on a routine basis." "DataStax does not recommend major compaction." So I'm unsure whether to start triggering manually these compactions… I guess I'll have to experiment with it. Thanks! André
