projjal opened a new pull request #8810: URL: https://github.com/apache/arrow/pull/8810
UnionListWriter#writeNull currently increments the index in the inner writer and doesn't unset the validity at the particular index. So if the validity at that index was already set (like due to overwriting on an existing vector) an empty list is created at that instead instead of null ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected]
