Github user mengxr commented on the issue:
https://github.com/apache/spark/pull/15567
I reverted the changes I made to enforce `Projection.initialize`, which
touched too many files and most of them doesn't really need to handle
nondeterministic expressions. The current implementation at least throws a
runtime error if a nondeterministic expression didn't get initialized, instead
of returning incorrect result.
Renamed `initializeStatesForPartition` to `initialize`.
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