This method interprets the given Flow description and creates the running stream. The result can be highly implementation specific, ranging from local actor chains to remote-deployed processing networks.

Interface for stages that need timer services for their functionality. Schedules a single task with the given delay.

Interface for stages that need timer services for their functionality. Schedules a repeated task with the given interval between invocations.

The namePrefix shall be used for deriving the names of processing entities that are created during materialization. This is meant to aid logging and failure reporting both during materialization and while the stream is running.