Re: how to clear data from disk

2015-03-12 Thread Ben Bromhead
To clarify on why this behaviour occurs, by default Cassandra will snapshot a table when you perform any destructive action (TRUNCATE, DROP etc) see http://www.datastax.com/documentation/cql/3.0/cql/cql_reference/truncate_r.html To free disk space after such an operation you will always need to c

Re: how to clear data from disk

2015-03-10 Thread Patrick McFadin
Or just manually delete the files. The directories are broken down by keyspace and table. Patrick On Mon, Mar 9, 2015 at 7:50 PM, 曹志富 wrote: > nodetool clearsnapshot > > -- > Ranger Tsao > > 2015-03-10 10:47 GMT+08:00 鄢来琼 : > >> Hi ALL, >> >> >> >> After dro

Re: how to clear data from disk

2015-03-09 Thread 曹志富
nodetool clearsnapshot -- Ranger Tsao 2015-03-10 10:47 GMT+08:00 鄢来琼 : > Hi ALL, > > > > After drop table, I found the data is not removed from disk, I should > reduce the gc_grace_seconds before the drop operation. > > I have to wait for 10 days, but there i