Zouxxyy opened a new pull request, #8337: URL: https://github.com/apache/paimon/pull/8337
### Purpose Support case-insensitive column matching when reading Parquet and ORC files. When `case-sensitive` is set to `false` at the catalog level, the format readers now resolve columns by case-insensitive name matching. This is useful for reading external data files whose column names differ only in case from the table schema (e.g. `Event_Name` in the file vs `event_name` in the table). Changes: - Add `caseSensitive()` to `FileFormatFactory.FormatContext` to propagate the catalog-level setting. - `FormatReadBuilder`: merge catalog-level `case-sensitive` into format options so it flows to readers. - **Parquet**: `ParquetReaderFactory` performs case-insensitive field matching (top-level and nested), with ambiguity detection for duplicate case-variant fields. `ParquetReaderUtil` mirrors this for nested column IO lookup. - **ORC**: propagate `IS_SCHEMA_EVOLUTION_CASE_SENSITIVE` to the ORC reader configuration. ### Tests - `ParquetCaseInsensitiveReadTest`: case-insensitive matching, case-sensitive returns null, nested structs, ambiguous duplicate detection. - `OrcCaseInsensitiveReadTest`: case-insensitive column matching via ORC schema evolution. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
