Thank You. I have change unchecked_tombstone_compaction to true . Major compaction will cause a big sstable ，I think is a lot good choice
-------------------------------------- Ranger Tsao 2015-06-09 11:16 GMT+08:00 Aiman Parvaiz <ai...@flipagram.com>: > So gc_grace zero will remove tombstones without any delay after > compaction. So it's possible that tombstones containing SSTs still need to > be compacted. So either you can wait for compaction to happen or do a > manual compaction depending on your compaction strategy. Manual compaction > does have some drawbacks so please read about it. > > Sent from my iPhone > > On Jun 8, 2015, at 7:26 PM, 曹志富 <cao.zh...@gmail.com> wrote: > > I have C* 2.1.5,store some data with ttl.Reduce the gc_grace_seconds to > zero. > > But it seems has no effect. > > Did I miss something? > -------------------------------------- > Ranger Tsao > >
