For instance, During deploy of MovieRecommender app, there is a failure and the app doesn't get deployed.
CDAP 3.3.0 compat branch:
I have verified that the UserScore class is packaged with the JAR I am deploying.
Here's a screenshot of the stacktrace:
This is an issue with both the cluster (3.4.0-SNAPSHOT) and SDK (3.3.0).