Visual Query fails to write to JDBC source

1. create a valid data source, named "myhive", with parameters:
url=jdbc:hive2://localhost:10000/default
driverClassName=org.apache.hive.jdbc.HiveDriver
username=kylo
NOTE: Test Connection on DataSource editor should have validated the JDBC source
2. go to Visual Query
3. create a transformation from "venues" table
4. save to a "myhive" datasource

kylo-services logs contain: