Github user bbende commented on the issue:
https://github.com/apache/nifi/pull/1527
+1 I recreated the scenario with 0.9 and 0.10 by setting back-pressure to 1
on the queues after ConsumeKafka and ConsumeKafka_0_10, and verified that after
this patch they have no problem resuming after sitting with back-pressure for
long periods of time. Will merge to master.
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