scovich opened a new issue, #8289: URL: https://github.com/apache/arrow-rs/issues/8289
**Describe the bug** While trying to refactor `cast_to_variant` to be more efficient, I noticed that the logic for maps does not check for NULL entries. It only looks at the offsets, which technically only say how many entries the map has. **To Reproduce** `test_cast_map_to_variant_object_with_nulls` produces a `MapArray` with no NULL rows, and the test expects a NULL output for the row that had an empty map. **Expected behavior** The test should produce a `MapArray` where one row is an empty map and another row is NULL; the former should become a variant object with no fields and the other should become NULL or Variant::Null (depending on whether the map is top-level or nested inside another variant value). -- 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]
