Yes, on a per-keyspace basis with NetworkTopologyStrategy (in 0.7). On Wed, Nov 10, 2010 at 4:40 AM, Jean-Yves LEBLEU <jleb...@gmail.com> 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 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 >> > >
-- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
