If a node is declared in the dfs.ha.namenodes.myCluster but is not later defined in subsequent dfs.namenode.servicerpc-address.myCluster.nodename or dfs.namenode.rpc-address.myCluster.XXX properties no error or warning message is provided to indicate that.
The only indication of a problem is a log message like the following:
Another way to look at this is that no error or warning is provided when a servicerpc-address/rpc-address property is defined for a node without a corresponding node declared in dfs.ha.namenodes.myCluster.
This arose when I had a typo in the dfs.ha.namenodes.myCluster property for one of my node names. It would be very helpful to have at least a warning message on startup if there is a configuration problem like this.