cloud-fan edited a comment on pull request #28683:
URL: https://github.com/apache/spark/pull/28683#issuecomment-653008759


   Shall we add a rule to remove all hint nodes at the beginning if the conf is 
set? This is future-proof in case we add new hint resolution rules in the 
future. I don't think we should deal with hint nodes added by custom rules. 
Hints should be added by end-users. Customer rules can add whatever plan nodes 
directly and we can't control it.


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