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 >
