Github user superbobry commented on the issue:
https://github.com/apache/spark/pull/17230
@holdenk thank you again for the feedback. I want to clarify the on
performance regressions:
> From looking at the description change it would be important to verify
that PySpark and SparkR also do not suffer a performance regression with the
proposed refactor.
Does Spark has a benchmark suite for such changes? If not, would it be
sufficient to time a minimal example, e.g. piping through `cat`?
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