On Wed, Oct 21, 2009 at 3:38 PM, Ramzi Rabah <rra...@playdom.com> wrote: > Hi Jonathan in what scenario will there be only one version of a row?
For instance, if you insert columns A B C in row K delete A B C from K while row K is in memory, then when that memtable is flushed to an sstable there will be one version of row K, the tombstone version. if you never update K again that will be the only version visible to compaction. > and for this scenario, does this mean that these tombstone records > will never ever be deleted? Yes. (before the fix attached to #507 anyway) > Also on a higher level, what I am trying to do is provide some garbage > collection of entries in the cassandra hash that have expired.(Kind of > like time-to-live functionality for records in Cassandra). Do you have > any insights on how that can be accomplished. I don't understand what you mean by "gc of entries in the cassandra hash." -Jonathan
