https://community.cloudera.com/t5/Support-Questions/two-name-nodes-are-stand-by-after-configuring-HA/m-p/185274#M147381 <P>Are you using HDP and did you enable NameNode HA using Ambari? If so then you should have automatic failover configured. Automatic Failover requires the ZooKeeper service instances and <EM>ZooKeeper FailoverControllers</EM> to be up and running.</P><P>If you setup HA manually, then you may need to transition one of the NNs to active status manually as described here:</P><P><A href="https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html" target="_blank">https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html</A></P> Tue, 04 Apr 2017 01:23:58 GMT ArpitAgarwal 2017-04-04T01:23:58Z