My money is on the fact that the serializer is just horribly verbose. It's using a basic set of the java serializer.
-Chris On Tue, May 25, 2010 at 10:02 AM, Ryan King <r...@twitter.com> wrote: > Also, timestamps for each column. > > -ryan > > On Tue, May 25, 2010 at 5:41 AM, Jonathan Ellis <jbel...@gmail.com> wrote: > > That's true. But fundamentally Cassandra is expected to use more > > space than mysql for a few reasons; usually the biggest factor is that > > Cassandra has to write out each column name in each row, since column > > names are dynamic unlike in mysql where you declare the columns once > > for the whole table. > > > > 2010/5/25 Peter Schüller <sc...@spotify.com>: > >>> Could you please tell me why? > >> > >> There might be pending sstable removals on disk, which won't happen > >> until GC or restart. If you just did a bulk insert and checked > >> diskspace immediately afterwards, I think this is a possible > >> explanation. > >> > >> (See "Write path" on > http://wiki.apache.org/cassandra/ArchitectureInternals) > >> > >> -- > >> / Peter Schuller aka scode > >> > > > > > > > > -- > > Jonathan Ellis > > Project Chair, Apache Cassandra > > co-founder of Riptano, the source for professional Cassandra support > > http://riptano.com > > >
