Incorrect configuration: namenode address dfs.namenode.rpc-address is not configured

Question

I am getting this error when I try and boot up a DataNode. From what I have read, the RPC paramters are only used for a HA configuration, which I am not setting up (I think)

Answer 1

Configuring the full host name in core-site.xml, masters and slaves solved the issue for me.

Old: node1 (failed)

New: node1.krish.com (Succeed)