Container.shutdown() only stops the runloop

Currently SamzaContainer.shutdown() only stops the RunLoop. Seems to me all the dependencies used by the container are not properly shutdown. E.g. the kafka system consumer/producer will not be shut down. In standalone case (ZkJobCoordinator.java), the next time controller.startContainer() will create the container with all these dependencies again. The Kafka producers/consumers will be created again without closing the previous ones. Please verify this is a problem and needs to be fixed.