@Avinash Reddy Issue from the logs are pointing to the unresolved hostnames. Verify the host resolution and try again. 2017-08-06 21:31:30,094 ERROR namenode.SecondaryNameNode (SecondaryNameNode.java:doWork(399)) - Exception in doCheckpoint java.net.UnknownHostException: usgvlhdp01.coveris 2017-08-09 12:45:20,630 ERROR namenode.NameNode (NameNode.java:main(1712)) - Failed to start namenode. java.net.SocketException: Unresolved address ... View more