dongjoon-hyun edited a comment on issue #27888: [SPARK-31116][SQL] Fix nested schema case-sensitivity in ParquetRowConverter URL: https://github.com/apache/spark/pull/27888#issuecomment-599432625 That's a correct behavior in `case-sensitive mode`, isn't it? Given the original schema `NAMED_STRUCT('lowercase', id, 'camelCase', id + 1) AS StructColumn`, `StructColumn` is matched and `LowerCase` and `camelcase` are not matched. So, the result is a struct with two `null` fields. Do you have any other valid failure for `ORC`?
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