romainfrancois commented on pull request #8122: URL: https://github.com/apache/arrow/pull/8122#issuecomment-696593899
The methods of `ParquetFileReader` no longer use tidyselect, i.e. you can use `$ReadTable()` or `$ReadTable(column_indices)` with an 0-based integer vector so this does not have to pay for retrieving the schema (which appears to be expensive) and invoke tidy selection. `read_parquet(col_select=<tidy selection spec>)` is still supported though, and does call `$GetSchema()`. In addition, methods `ReadRowGroup()` and `$ReadRowGroups()` have been added. ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
