Hi Boying,
UPDATE write new value with new time stamp. Old value is not tombstone, but remains until compaction. gc_grace_period is not related to this. Best regards, Vladimir Yudovin, Winguzone - Hosted Cloud Cassandra Launch your cluster in minutes. ---- On Mon, 14 Nov 2016 03:02:21 -0500Lu, Boying <boying...@dell.com> wrote ---- Hi, All, Will the Cassandra generates a new tombstone when updating a column by using CQL update statement? And is there any way to get the number of tombstones of a column family since we want to void generating too many tombstones within gc_grace_period? Thanks Boying
