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

set ReplicationFactor and Token at Column Family/SuperColumn level.

2010-08-05 Thread Zhong Li
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 token. We have some Column Families. It is very hard to c