Github user MikeThomsen commented on the issue:
https://github.com/apache/nifi/pull/2448
Sure, but you might want to look at the link above your last one as that
touches on the dual ProcessSession you and @markap14 suggested. That turned out
to not be entirely straight-forward, so I hacked on the standard ProcessSession
impl, but I have a feeling my approach could have unintended consequences.
Let me know if you still want to review this now and I'll rebase.---
