Hi, I encounter a similar question, spark1.4
Master2 run some days , then give a timeout exception, then shutdown. I found a bug : https://issues.apache.org/jira/browse/SPARK-9629 INFO ClientCnxn: Client session timed out, have not heard from server in 40015ms for sessionid 0x351c416297a145a, closing socket connection and attempting reconnect could you tell me what do you do for this? Best Regards, Evan