User defined compaction to do a single sstable compaction on just that sstable
It's a nodetool command in very recent versions, or a jmx method in older versions -- Jeff Jirsa > On Aug 31, 2017, at 11:04 PM, qf zhou <zhouqf2...@gmail.com> wrote: > > I am using a cluster with 3 nodes and the cassandra version is 3.0.9. I > have used it about 6 months. Now each node has about 1.5T data in the disk. > I found some sstables file are over 300G. Using the sstablemetadata command, > I found it: Estimated droppable tombstones: 0.9622972799707109. > It is obvious that too much tombstone data exists. > The default_time_to_live = 8640000(100 days) and gc_grace_seconds = > 432000(5 days). Using nodetool compactionstats, I found the some compaction > processes exists. > So I really want to know how to clear tombstone data ? otherwise the disk > space will cost too much. > I really need some help, because some few people know cassandra in my > company. > Thank you very much! > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org > For additional commands, e-mail: user-h...@cassandra.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org For additional commands, e-mail: user-h...@cassandra.apache.org
