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 <aa...@thelastpickle.com>wrote: > 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. > Adding all 8 at once is probably a bad idea. > > How about you make a new cluster of 8 nodes, manually assign tokens and > then copy the data from the 2 node ring to the 8 node. Then move the 2 > original nodes into the new cluster? > > Hope that helps. > Aaron > > On 10 Nov 2010, at 20:56, Jean-Yves LEBLEU wrote: > > > 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 nodes with such data repartition ? > > > > Thanks for any answer. > > > > Jean-Yves > >
