Github user HyukjinKwon commented on the issue: https://github.com/apache/spark/pull/19464 I think the optimisation by `spark.sql.files.maxPartitionBytes` sql specific conf includes this concept in `FileScanRDD` and it looks already partially doing it in combining input splits. I'd suggest to avoid putting this conf in `FileScanRDD`, for now, if I didn't miss something.
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