alamb opened a new issue, #1625: URL: https://github.com/apache/arrow-rs/issues/1625
**Describe the bug** UnionArray::is_null checks the Union's validity map rather than its slot. Here is the default impl for `is_null` https://github.com/apache/arrow-rs/blob/master/arrow/src/array/array.rs#L164-L166 There is no override in the union's impl of `Array`:https://github.com/apache/arrow-rs/blob/master/arrow/src/array/array_union.rs#L305-L313 See discussion from @tustvold and @viirya here: https://github.com/apache/arrow-rs/pull/1589/files#r854817015 **To Reproduce** Steps to reproduce the behavior: **Expected behavior** UnionArray::is_null should check the slot (child's data) for nullness, rather than its own **Additional context** Add any other context about the problem here. -- 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]
