Disconnect between Accumulo instances seen by Zookeeper and Accumulo

[Smith, Joshua D.]

What would cause a situation where Zookeeper shows Accumulo instances but 
Accumulo lists no instances?

Executing an ls /accumulo/instances using zkCli.sh I can see two instances 
listed.
Using bin/accumulo org.apache.accumulo.server.util.ListInstances I see none 
listed.

I'm running CDH4.3 and Accumulo 1.4.3.

Josh