I think you mean compaction? You can use nodeprobe / nodetool for that.
http://wiki.apache.org/cassandra/NodeProbe On Fri, Mar 12, 2010 at 12:40 PM, Weijun Li <weiju...@gmail.com> wrote: > Suppose I insert a lot of new items but also delete a lot of new items > daily, it will be ideal if I can force GC to happen during mid night (when > traffic is low). Is there any way to manually force GC to be executed? In > this way I can add a cronjob to trigger gc in mid night. I tried nodetool > and the JMX interface but they don't seem to have that. > > -Weijun >