@Harsh J yeap with    <property> <name>dfs.ha.fencing.methods</name> <value>shell(/bin/true)</value> </property> It working perfect now    Thanks you very much  ... View more

After check again hdfs-site.xml on 2 DataNode where Yarn Node Manager stand on , I see that the hdfs-site file missing this line when compare with the hdfs-site on Name Node   <property> <name>dfs.client.failover.proxy.provider.radcluster</name> <value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value> </property> restart the Yarn Node Manager Service , It work now , Thanks you ... View more