A node can only exist in one DC and one rack. Use different keyspaces as suggested.
Cheers ----------------- Aaron Morton Freelance Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 12/04/2013, at 1:47 AM, Jabbar Azam <aja...@gmail.com> wrote: > Hello, > > I'm not an expert but I don't think you can do what you want. The way to > separate data for applications on the same cluster is to use different tables > for different applications or use multiple keyspaces, a keyspace per > application. The replication factor you specify for each keyspace specifies > how many copies of the data are stored in each datacenter. > > You can't specify that data for a particular application is stored on a > specific node, unless that node is in its own cluster. > > I think of a cassandra cluster as a shared resource where all the > applications have access to all the nodes in the cluster. > > > Thanks > > Jabbar Azam > > > On 11 April 2013 14:13, Matthias Zeilinger <matthias.zeilin...@bwinparty.com> > wrote: > Hi, > > > > I would like to create big cluster for many applications. > > Within this cluster I would like to separate the data for each application, > which can be easily done via different virtual datacenters and the correct > replication strategy. > > What I would like to know, if I can specify for 1 node multiple values in the > PropertyFileSnitch configuration, so that I can use 1 node for more > applications? > > For example: > > 6 nodes: > > 3 for App A > > 3 for App B > > 4 for App C > > > > I want to have such a configuration: > > Node 1 – DC-A& DC-C > > Node 2 – DC-B & DC-C > > Node 3 – DC-A & DC-C > > Node 4 – DC-B & DC-C > > Node 5 – DC-A > > Node 6 – DC-B > > > > Is this possible or does anyone have another solution for this? > > > > > > Thx & br matthias > >
