Thanks for your reply.
It was about StandBy Namenode not promoted to Active.
Can you please advise what the path of ZKFC logs?  

"Similar to Namenode status web page, a Cluster Web Console is added in federation to monitor the federated cluster at http://<any_nn_host:port>/dfsclusterhealth.jsp. Any Namenode in the cluster can be used to access this web page”
What is the default port for the cluster console? I tried 8088 but no luck.

Please advise.

On 4 Aug, 2014, at 7:22 pm, Brahma Reddy Battula <[EMAIL PROTECTED]> wrote:

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