beryan opened a new issue, #46049: URL: https://github.com/apache/arrow/issues/46049
### Describe the enhancement requested As a user of the Arrow Dataset API, I want to control null partition key handling when using the `Directory` partition type, so that I can partition data with null values similarly to the `Hive` partition type. Currently, when Directory partitioning, data containing nulls for a partition key will be written to a file at the root of the output dataset directory. In contrast, Hive partitioning options allow more control and null data is written to a `__HIVE_DEFAULT_PARTITION__` subdirectory by default. It would be nice if a user could specify the name of a null subdirectory, similar to hive options. ### Component(s) C++ -- 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: issues-unsubscr...@arrow.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
