We have a new CDH 5 cluster (administered by CM 5.0.2) running YARN. I'm able to submit the example JAR to the cluster and have it run on MRv2. But when I submit a flow to Oozie it fails to submit the map-only job with the following error:

org.apache.oozie.action.ActionExecutorException: JA009: Cannot initialize Cluster. Please check your configuration for mapreduce.framework.name and the correspond server addresses.

This seems odd, since the configuration was all generated by CM, and it's never used anything but YARN (MR was never installed). Can anyone recommend things to check on the Oozie server that might cause this issue?