If you're connecting via thrift, all your traffic is most likely being routed to just one node, which then communicates with the other nodes for you.
On Wed, Apr 22, 2015 at 6:11 AM, Anishek Agarwal <anis...@gmail.com> wrote: > Forwarding it here, someone with Cassandra internals knowledge can help may > be.... > > Additionally, i observe the same behavior for reads too where Network read > from one node is twice than other two.. > > > ---------- Forwarded message ---------- > From: Anishek Agarwal <anis...@gmail.com> > Date: Tue, Apr 21, 2015 at 5:15 PM > Subject: Network transfer to one node twice as others > To: "u...@cassandra.apache.org" <u...@cassandra.apache.org> > > > Hello, > > We are using cassandra 2.0.14 and have a cluster of 3 nodes. I have a > writer test (written in java) that runs 50 threads to populate data to a > single table in a single keyspace. > > when i look at the "iftop" I see that the amount of network transfer > happening on two nodes is same but on one of the nodes its almost 2ice as > the other two, Any reason that would be the case ? > > Thanks > Anishek >