We do have 9 nodes in prod DC . And using opscenter for monitoring and incremental repairs enabled in opscenter. We have to decommission couple of nodes from one DC as part of down scaling the cluster. How do we do it effectively?
Do we have to run a manual repair again on all nodes before decommissioning despite of repairs running via opscenter by stopping them?
Do we have to drain the node before decommissioning?
Will draining node and stopping DSE process and then running nodetool removenode command would be more effective instead of running nodetool decommission on a running node? So that it stops native connections to that node and also data streaming will happen without any data loss?