Github user jiangxb1987 commented on the issue:
https://github.com/apache/spark/pull/13893
With [PR#14012](https://github.com/apache/spark/pull/14012) the order
between deterministic and non-deterministic predicates would not be changed
arbitrarily, so I think we could apply this improvement which push down
predicates placed before non-deterministic parts in partition conditions so
that we could do partition pruning even when condition contains
non-deterministic fields. @liancheng @cloud-fan
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