Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/22197#discussion_r212797855 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetFilters.scala --- @@ -350,25 +352,43 @@ private[parquet] class ParquetFilters( } /** - * Returns a map from name of the column to the data type, if predicate push down applies. + * Returns nameMap and typeMap based on different case sensitive mode, if predicate push --- End diff -- instead of returning 2 maps, can we just add a `originalName` field to `ParquetSchemaType`?
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