Hi, It's not clear to me in the doc about cold_reads_to_omit. when cold_reads_to_omit ignores low read rate sstables during compactions, what would gc tombstones in those cold sstables? Do we rely on tombstone compactions, which, I might misconfigured, I've never seen tombstone compactions got kicked off?
Cassandra version: 2.0.5 David
