Hi there, Dense union type is not supported yet in Parquet https://github.com/apache/arrow/blob/8e43f23dcc6a9e630516228f110c48b64d13cec6/cpp/src/parquet/arrow/schema.cc#L382 .
Is it planned to support it nearly? And if I'd implement this myself, is there any other codes to take care of? Thanks, Zimo Zhang
