Hello, I've been testing a four identical node cassanda 1.2 cluster for a number of days. I have written a c# client using cassandra sharp() which inserts data into a table.
The keyspace difinition is CREATE KEYSPACE "data" WITH REPLICATION = {'class' : 'NetworkTopologyStrategy', 'dc1' : 3}; The table definition is CREATE TABLE datapoints ( siteid bigint, time timestamp, channel int, data float, PRIMARY KEY ((siteid, channel),time) ) I am finding that the CPU load on one of the servers stays at ~90% whilst the load on the other servers stays < 40%. All the servers are supposed to be identical. The client library I am using does load balancing between all nodes. I have also used the cassandra stress tool as follows cassandra-stress -d 192.168.21.7,192.168.21.9,192.168.21.12,192.168.21.14 --replication-factor 3 -n 10000000 -t 100 and have found that it behaves similarly. Can somebody explain why this happens? -- Thanks A Jabbar Azam