danny0405 edited a comment on issue #1738: [CALCITE-3719] Add hint option checker to customize the option URL: https://github.com/apache/calcite/pull/1738#issuecomment-572915550 > @danny0405 , how many log messages will be logged in case an invalid hint is used? > > For instance: user specifies an invalid hint, then the optimizer transforms the query 100500 times. Will each transformation (assuming the rule touches the rel with the hint) log a new message saying the hint is not valid? Each hint only once. Say if i have 10 invalid hints, there would log 10 warnings.
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