Hi team, what does this warn usually mean? WARN [ClientCnxn] [Start a Pinot [SERVER]-SendThread(pinot-zookeeper:2181)] Client session timed out, have not heard from server in 29068ms for sessionid 0x1005d5cdfda0003

Is server gc’ing? With stop the world GC, server connection to ZK may be lost. You want to check if your cluster is under resourced or if you are running heavy queries