Github user ijokarumawak commented on the issue:
https://github.com/apache/nifi/pull/1658
I've updated the PR and changed how those processors handle failed input
FlowFile after it had processed other inputs successfully within the same
onTrigger process session. In short, "Put the failed FlowFile back into its
input queue then discontinue."
[Gist](https://gist.github.com/ijokarumawak/e552885a29c53ce60012cacef62a3342)
is also updated to illustrate what will happen with default behavior and
enabled 'Rollback on Failure'.
Any feedback is appreciated. Thanks!
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