tgravescs commented on pull request #32195:
URL: https://github.com/apache/spark/pull/32195#issuecomment-821389712
If I'm understanding this properly it seems like the root cause is actually
that AQE looks at the plan before the columnar changes are applied and physical
plan gets executed so it thinks they are canonically the same when really after
preparations (specifically here ApplyColumnarRulesAndInsertTransitions) and
execution they aren't. I wonder if there is a better way to do that part.
Might be nice to investigate that a bit further to see if that is possible.
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