Github user apiri commented on the pull request:
https://github.com/apache/nifi/pull/91#issuecomment-153957610
That context.yield is what is controlled by the processor configuration so
that the user can choose how often this retry should happen, which I think is
the right fit. However, it could be interesting to have different yield
strategies as options; as an example, an exponential backoff among them.
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