Did you clear the LocationInfo from the non prod cluster ? When you gave prod seeds from non-prod, non-prod would have discovered all the nodes in prod. Unless you have cleared the location info they will still have that knowledge.
Does nodetool ring in non-prod list any prod machines ? if so you can purge that information from non prod using nodetool removetoken, see http://wiki.apache.org/cassandra/Operations#Removing_nodes_entirely Hope that helps. ----------------- Aaron Morton Freelance Cassandra Developer @aaronmorton http://www.thelastpickle.com On 20/08/2011, at 7:53 AM, Hefeng Yuan wrote: > Symptom is that when we populate data into the non-prod cluster, after a > while, we start seeing this warning message from the prod cluster: > > "WARN [GossipStage:1] 2011-08-19 19:47:35,730 GossipDigestSynVerbHandler.java > (line 63) ClusterName mismatch from non-prod-node-ip > non-prod-Cluster!=prod-Cluster" > > Looks like the non-prod cluster is trying to gossip to the prod cluster. It > does stop when we shutdown the non-prod cluster. > > This warning will last few days and stop happening. Will pop up again once we > starts loading data into the non-prod cluster. > > When we setup the prod cluster, we did make a mistake by using non-prod seeds > in cassandra.yaml. However, we did correct the yaml, and cleaned > LocationInfo*, this is still happening. > > Any clue is appreciated. > > Thanks, > Hefeng
