rdblue commented on issue #563: URL: https://github.com/apache/parquet-format/issues/563#issuecomment-4578991662
@etseidl, does this break older readers? There are two things that I think we need to watch out for. First, whether changing required to optional breaks readers if all of the values are present. I suspect that it doesn't, but we need to confirm that. The second issue is whether omitting the value once the field is optional breaks older readers and I think it is likely that it does. If my guesses are correct, then this is a forward-compatibility breaking change. That is, older readers are no longer compatible when writers do not produce `path_in_schema` values. In that case, I think that we need to plan how to handle that compatibility issue. I don't think it is okay to leave this up to writers without clear guidance. -- 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]
