I have created a NIP to add some additional capabilities to Stateless NiFi that would make it much easier for calling applications to track failure signals in NiFi components.
https://issues.apache.org/jira/browse/NIP-46 The need for this NIP came about while I was working on a tool to run NiFi flows inside of a test harness, but I think it could also be useful in general for other applications of Stateless NiFi such as launching it from a stateful flow. Assuming no objections, I plan to start a lazy-consensus vote soon. Thanks, Mike
