Just stop the server/kill C* process as node never fully joined the cluster yet – that should be enough. You can safely remove the data i.e. streamed-in on new node so you can use the node for other new cluster.
From: Akshay Bhardwaj [mailto:akshay.bhardwaj1...@gmail.com] Sent: Tuesday, April 30, 2019 6:35 AM To: user@cassandra.apache.org Subject: Decommissioning a new node when the state is JOINING Hi Experts, I have a cassandra cluster running with 5 nodes. For some reason, I was creating a new cassandra cluster, but one of the nodes intended for new cluster had the same cassandra.yml file as the existing cluster. This resulted in the new node joining the existing cluster, making total no. of nodes as 6. As of now in "nodetool status" command, I see that the state of the new node is JOINING, and also rebalancing data with other nodes. What is the best way to decommission the node? 1. Can I execute "nodetool decommission" immediately for the new node? 2. Should I wait for the new node to finish sync, and decommission only after that? 3. Any other quick approach without data loss for existing cluster? Thanks in advance! Akshay Bhardwaj +91-97111-33849
