maropu commented on issue #28041: [SPARK-30564][SQL] Improved extra new line and comment remove URL: https://github.com/apache/spark/pull/28041#issuecomment-612877040 I think the performance difference comes from the overhead of monadic chains and [your commit](https://github.com/apache/spark/commit/f7fbe1777651cd93c1f8a33547854c5ba61963ee). But, not sure we need the further optimization (converting it into the while loop) in terms of code maintenability.
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