11-03-2017 11:38 AM
Based on this thread, it seems like the following command may be an option. I will wait for further guidance, though.
./hdfs haadmin -transitionToActive <nodename>
11-13-2017 11:31 AM
I continued the resolution of this issue in another thread specific to the error:
ls: Operation category READ is not supported in state standby
The solution is marked on that thread, however, a quick summary was that I needed to add the Failover Controller role to a node in my cluster, enable Automatic Failover, and then restart the cluster for it all to kick in.