Github user viazovskyi commented on the issue:
https://github.com/apache/nifi/pull/2657
@mgaido91 Adding UT I realized that just reset the flag and then return is
not enough, because cluster state is not fully read (e.g.
latestIdentifiersProcessed was not getting initialized) if i do return after
yield. Please review the new commit after all checks completed. The idea is
give the loop a chance to iterate over all read cluster' state and if processor
should yield then exit the method after resetting the flag.
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