Re: set ReplicationFactor and Token at Column Family/SuperColumn level.

2010-08-06 Thread Benjamin Black
"Additional keyspaces have very little overhead (unlike CFs)." On Fri, Aug 6, 2010 at 9:42 AM, Zhong Li wrote: > > If I create 3-4 keyspaces, will this impact performance and resources (esp. > memory and disk I/O) too much? > > Thanks, > > Zhong > > On Aug 5, 2010, at 4:52 PM, Benjamin Black wrot

Re: set ReplicationFactor and Token at Column Family/SuperColumn level.

2010-08-06 Thread Zhong Li
If I create 3-4 keyspaces, will this impact performance and resources (esp. memory and disk I/O) too much? Thanks, Zhong On Aug 5, 2010, at 4:52 PM, Benjamin Black wrote: On Thu, Aug 5, 2010 at 12:59 PM, Zhong Li wrote: The big thing bother me is initial ring token. We have some Column

Re: set ReplicationFactor and Token at Column Family/SuperColumn level.

2010-08-05 Thread Benjamin Black
On Thu, Aug 5, 2010 at 12:59 PM, Zhong Li wrote: > > The big thing bother me is initial ring token. We have some Column Families. > It is very hard to choose one token suitable for all CFs. Also some Column > Families need higher Consistent Level and some don't. If we set Consistency Level is set

Re: set ReplicationFactor and Token at Column Family/SuperColumn level.

2010-08-05 Thread Gary Dusbabek
On Thu, Aug 5, 2010 at 14:59, Zhong Li wrote: > All, > > Thanks for Apache Cassandra Project, it is great project. > > This is my first time to use it. We install it on 10 nodes and runs great. > The 10 nodes cross all 5 datacenters around the world. > > The big thing bother me is initial ring tok