I have our application code deployed in two data centers, DC1 and DC2 and Cassandra nodes are also in DC1 and DC2 making a single cluster.
Our application servers in DC1 are communicating to DC1 Cassandra nodes which I verified with "netstat -a | grep 9042" But somehow internally DC1 Cassandra nodes are trying to get the data from DC2 Cassandra nodes and because of that calls are timing out at the application servers. We are running DSE4.0 Cassandra version and our app servers are using Datastax cpp driver. What can be the issue and what are the things I can try out to see what's happening.