On Thu, May 5, 2011 at 1:21 AM, Peter Schuller <peter.schul...@infidyne.com>wrote:
> > It's no longer recommended to run nodetool compact regularly as it can > mean > > that some tombstones do not get to be purged for a very long time. > > I think this is a mis-typing; it used to be that major compactions > were necessary to remove tombstones, but this is no longer the case in > 0.7 so that the need for major compactions is significantly lessened > or even eliminated. However, running major compactions won't cause > tombstones *not* to be removed; it's just not required *in order* for > them to be removed. > I think he was suggesting that any tombstones *left* in the large sstable generated by the major compaction won't be removed for a long time because that sstable itself will not participate in any minor compactions for a long time. (In general, rows in that sstable will not be merged for a long time.) -- Tyler Hobbs Software Engineer, DataStax <http://datastax.com/> Maintainer of the pycassa <http://github.com/pycassa/pycassa> Cassandra Python client library
