felipecrv commented on PR #41189: URL: https://github.com/apache/arrow/pull/41189#issuecomment-2059968343
> +1! I wonder would this approach have a threshold of null percentage above which it would make sense to keep current approach (assuming everything is nullable)? (I didn't look into `AppendEmptyValues` so this question might not even make sense) This is not about optimizing the building of FSL arrays. Just minimizing the existence of unnecessary validity bitmaps. If at least one valid list's value is null, there will be a bitmap. The difference is that a null list doesn't imply nulls in the children. -- 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]
