Github user mattyb149 commented on the issue:
https://github.com/apache/nifi/pull/642
Yes, at one point I had a "Refresh Interval" property but I think that was
in another branch, will restore it. Also, currently any change to properties
will reset the state (since the tables fetched may have changed), I'm thinking
of taking that part out. The Refresh Interval would cause all tables to be
re-fetched, and/or the user could always manually clear state. What do you
think?
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