If the rows you are updating are not cached, yes. (Otherwise maybe 10% slower.)
On Mon, Jun 6, 2011 at 7:29 AM, David Boxenhorn <da...@citypath.com> wrote: > Jonathan, are Donal Zang's results (10x slowdown) typical? > > On Mon, Jun 6, 2011 at 3:14 PM, Jonathan Ellis <jbel...@gmail.com> wrote: >> >> On Mon, Jun 6, 2011 at 6:28 AM, Donal Zang <zan...@ihep.ac.cn> wrote: >> > Another thing I noticed is : if you first do insertion, and then build >> > the >> > secondary index use "update column family ...", and then do select based >> > on >> > the index, the result is not right (seems the index is still being built >> > though the "update" commands returns quickly). >> >> That is correct. "describe keyspace" from the cli tells you when an >> index has finished building. >> >> -- >> Jonathan Ellis >> Project Chair, Apache Cassandra >> co-founder of DataStax, the source for professional Cassandra support >> http://www.datastax.com > > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of DataStax, the source for professional Cassandra support http://www.datastax.com
