[GitHub] [spark] cloud-fan commented on pull request #40520: [SPARK-42896][SQL][PYSPARK] Make `mapInPandas` / `mapInArrow` support barrier mode execution

["cloud-fan (via GitHub)" <gi...@apache.org>]

cloud-fan commented on PR #40520:
URL: https://github.com/apache/spark/pull/40520#issuecomment-1480433026

   hmmm why do we need to care about the optimizer? The optimizer is not sensitive to the physical execution engine, e.g. Preso, Spark, Flink have many similar SQL optimizations.


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