alamb commented on pull request #1263: URL: https://github.com/apache/arrow-rs/pull/1263#issuecomment-1038119096
> I was wondering, what does the arrow spec say about dictionary values being null? Probably no one uses that combination, but in theory, a valid key could map to a null value. https://arrow.apache.org/docs/format/Columnar.html#dictionary-encoded-layout says explicitly > Note that a dictionary is permitted to contain duplicate values or nulls: -- 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]
