Hello, I'm trying to understand the network usage I am seeing in my cluster, can anyone shed some light? It's an RF=3, 12-node, cassandra 0.8.6 cluster. The nodes are p13,p14,p15...p24 and are consecutive in that order on the ring. Each node is only a cassandra database. I am hitting the cluster from another server (p4).
The pattern on p4 is the pattern is to 1. read a lot of data (some columns for hundreds to tens of thousands of keys, split into 512-key multigets) 2. process the data 3. write back a byte array to cassandra (average size is 400 bytes) p4 reads as