neilconway opened a new pull request, #25544: URL: https://github.com/apache/datafusion/pull/25544
## Which issue does this PR close? - N/A ## Rationale for this change The Spark-compatible `shuffle` implementation unnecessarily copied the first child element as a placeholder for each null list. This is wrong for typed-NULL lists with no children, and was redundant work anyway: NULL lists can be adequately represented by a repeated offset entry, along with setting the appropriate bit in the validity buffer. ## What changes are included in this PR? * Fix bug * Add unit test ## What is the testing strategy for this PR? Existing tests pass, new test added. ## Are there any user-facing changes? No. -- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
