@Siva Kumar From the YARN logs "Session 0x2675d4e5b3b0046 for server prdhdpdn1.example.com/<MN1_IP>:2181, unexpected error" that shows there is a problem with the zookeeper. Can you share the zookeeper.log in /var/log/* on the 2 nodes where the active and standby RM's are running. Ensure also the NTPD is running and synchronized on all the servers!! Please revert. ... View more