Re: Data management on a ring

2010-11-10 Thread Jonathan Ellis
Yes, on a per-keyspace basis with NetworkTopologyStrategy (in 0.7). On Wed, Nov 10, 2010 at 4:40 AM, Jean-Yves LEBLEU wrote: > Thanks for the anwser. > > It was not exactly my point, I would like to know if in a 10 nodes rings if > it is possible to restrict replication of some data to only 2 nod

Re: Data management on a ring

2010-11-10 Thread Jean-Yves LEBLEU
Thanks for the anwser. It was not exactly my point, I would like to know if in a 10 nodes rings if it is possible to restrict replication of some data to only 2 nodes, and other data to all nodes ? Regards. Jean-Yves On Wed, Nov 10, 2010 at 11:17 AM, aaron morton wrote: > If I understand your co

Re: Data management on a ring

2010-11-10 Thread aaron morton
If I understand your correctly, you just want to add 8 nodes to a ring that already has 2 ? You could add the nodes and manually assign them tokens following the guidelines here http://wiki.apache.org/cassandra/Operations I'm not sure how to ensure the minimum amount of data transfer though. A

Data management on a ring

2010-11-09 Thread Jean-Yves LEBLEU
Hello all, We have an installation of 10 nodes, and we choose to deploy 5 rings of 2 nodes. We would like to change to a ring of 10 nodes. Some data have to be replicated on the 10 nodes, some should stay on 2 nodes. Do you have any idea or documentation pointer in order to have a ring of 10 nod