> 1) Let’s say in this case I insert a key at DC2 and its token is, let’s > say 85070591730234615865843651857942052874, in this case will it be owned by > DC2 ? and then replicated on DC1 ? i.e. who owns it. We don't think in terms of owning the token. The token range in the local DC that contains the token is used to find the first replica for the row. The same process is used to find the replicas in the remote DC's.
> 2) Notice that the Owns distribution is not even, is this something I > should be worrying about ? No. I think that's changed in the newer versions. > I am using Cassandra 1.0.12. Please use version 1.1 or 1.2. Cheers ----------------- Aaron Morton Freelance Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 18/04/2013, at 7:03 AM, "More, Sandeep R" <sandeep.r.m...@intel.com> wrote: > Hello, > My test setup consist of two datacenters DC1 and DC2. > DC2 has a offset of 10 as you can see in the following ring command. > > I have two questions: > 1) Let’s say in this case I insert a key at DC2 and its token is, let’s > say 85070591730234615865843651857942052874, in this case will it be owned by > DC2 ? and then replicated on DC1 ? i.e. who owns it. > 2) Notice that the Owns distribution is not even, is this something I > should be worrying about ? > > I am using Cassandra 1.0.12. > > Following is the ring command output: > > Address DC Rack Status State Load Owns > Token > > > 85070591730234615865843651857942052874 > 10.0.0.1 DC1 RAC-1 Up Normal 101.73 KB 50.00% 0 > 10.0.0.2 DC2 RAC-1 Up Normal 92.55 KB 0.00% 10 > 10.0.0.3 DC1 RAC-1 Up Normal 115.09 KB 50.00% > 85070591730234615865843651857942052864 > 10.0.0.4 DC2 RAC-1 Up Normal 101.62 KB 0.00% > 85070591730234615865843651857942052874 > >
