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Add additional Standby NN to existing federated cluster/namesapce - HDP-3.1

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Add additional Standby NN to existing federated cluster/namesapce - HDP-3.1

New Contributor

Hello,


Checking the doc https://docs.hortonworks.com/HDPDocuments/HDP3/HDP-3.1.0/data-storage/content/add_a_namenode_to_an_e... and the jiras https://issues.apache.org/jira/browse/HDFS-6440 we see that we should be able to have multiple NNs (eg:2 standby NNs) in HDP-3.1.0.0-78.

We have already defined the HA namespace and what I cannot really track is how and if we an add a 3rd stby namenode to an already existent HDFS federated cluster/namespace. The doc above seems to refer to this situation but something is missing at step 3 (For more information about steps 1, 2, and 3; see . <info_missing>).


Has anyone tested/tried this?


Thanks,

Elisabeta