IvanVergiliev commented on issue #24068: [SPARK-27105][SQL] Optimize away 
exponential complexity in ORC predicate conversion
URL: https://github.com/apache/spark/pull/24068#issuecomment-472293249
 
 
   cc @dongjoon-hyun @cloud-fan - it'd be great if you get a chance to review 
this! I know it's a bit of a large change, but I tried to make it as isolated 
as possible and explain it well - let me know if I can be of additional help. 
(Also, a large part of the diff delta comes from the regenerated benchmark 
results AFAICT.)

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