We have a Kylin cluster, with 2 head nodes, 1 Ambari Server node and remaining RN and Ambari Agent Nodes. One of our head nodes is corrupted during reimage.
So while building cubes on Kyline Web UI, we are running into "Call From IP1 to HeadNodeIp:10020 failed on connection exception: java.net.ConnectException: Connection refused" exception.
So we are looking for documentation on steps to safely remove one of the Head Nodes and indicate Kylin Cluster to Build cubes with only 1 Head Node. Do we lose any metadata information, Can we just turn of that machine ? Are there any settings we need to update on Kylin Scripts?