Github user mattyb149 commented on the issue:
https://github.com/apache/nifi/pull/710
I ran ConsumePop3 against GMail but hadn't seen your comment on all the
dynamic properties that need to be set. I started and stopped the processor,
but there is a thread continuing to run. Stopped NiFi but the thread kept
going, had to be killed after 20 seconds. Maybe there's a timeout that can be
set?
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