Hello all Usually, when using DELETE in CQL3 on some fields, C* creates tombstone columns for those fields.
Now if I delete a whole PARTITION (delete from MyTable where partitionKey=...), what will C* do ? Will it create as many tombstones as there are physical columns on this partition or will it just mark this partition as "deleted" (Row Key deletion marker) ? On a side note, if I insert a bunch of physical columns in one partition with the SAME ttl value, after a while they will appear as expired, would C* need to scan the whole partition on disk to see which columns to expire or could it see that the whole partition is indeed expired thanks to meta data/ Partition key cache kept in memory ? I was thinking about the estimate histograms for TTL but I don't know in detail how it work Regards Duy Hai DOAN
