Re: Cassandra 0.7 - Query on network topology

2011-01-05 Thread Peter Schuller
> 1. Some way to send requests for keys whose token fall between 0-25 to B and > never to C even though C will have the data due to it being replica of B. If your data set is large, be mindful of the fact that this will cause C to be completely cold in terms of caches. I.e., when B does go down, C

Re: Cassandra 0.7 - Query on network topology

2011-01-05 Thread Jonathan Ellis
On Wed, Jan 5, 2011 at 3:37 AM, Narendra Sharma wrote: > What I am looking for is: > 1. Some way to send requests for keys whose token fall between 0-25 to B and > never to C even though C will have the data due to it being replica of B. > 2. Only when B is down or not reachable, the request shoul

Cassandra 0.7 - Query on network topology

2011-01-05 Thread Narendra Sharma
Hi, We are working on defining the ring topology for our cluster. One of the plans under discussion is to have a RF=2 and perform read/write operations with CL=ONE. I know this could be an issue since it doesn't satisfy R+W > RF. This will work if we can always force the clients to go to the first