@irfangk1  If its an HDP cluster then I assume you are using Ambari for managing the HDF cluster, you will need to first prepare the 2 new hosts see the ​Prepare the EnvironmentCloudera document   Then add the hosts to the cluster see Add host to cluster Thereafter add HDF to these 2 new nodes it follows the same procedure as adding HDF Services on an existing HDP Cluster hTH ... View more

@Manoj690  Going through your logs I can see that the Namenode is in SAFE MODE, and in this case it won't allow you to change the status of any file in the cluster including the logs. 2019-08-22 12:31:01,376 [server.Accumulo] INFO : Attempting to talk to zookeeper 2019-08-22 12:31:01,681 [server.Accumulo] INFO : ZooKeeper connected and initialized, attempting to talk to HDFS 2019-08-22 12:31:01,946 [server.Accumulo] WARN : Waiting for the NameNode to leave safemode 2019-08-22 12:31:01,946 [server.Accumulo] INFO : Backing off due to failure; current sleep period is 1.0 seconds 2019-08-22 12:31:02,950 [server.Accumulo] WARN : Waiting for the NameNode to leave safemode 2019-08-22 12:31:02,950 [server.Accumulo] INFO : Backing off due to failure; current sleep period is 2.0 seconds 2019-08-22 12:31:04,954 [server.Accumulo] WARN : Waiting for the NameNode to leave safemode   To resolve the issue can you do the following as hdfs user $ hdfs dfsadmin -safemode get Safe mode is OFF The above is the desired output but if you get ON then proceed like below First backup your FS Image & Edits $ hdfs dfsadmin -saveNamespace   Then exit the safemode $ hdfs dfsadmin -safemode leave Once successful then revalidate $ hdfs dfsadmin -safemode get   This time it should be off and you can now successfully restart the failed services from Ambari everything should succeed HTH ... View more