alamb commented on issue #14993: URL: https://github.com/apache/datafusion/issues/14993#issuecomment-2923352013
@adriangb and I spoke about this -- we think having some sort of motivating example where the difference between schemas in the table and the file leads to bad performance will help move this project along Some examples we brainstormed: 1. Table schema is in `int64` but files are in `int32` (models schema evolution) 2. Files contain `Struct`s and the predicate is `array_field(struct, field)` where today the entire struct will be decoded (and then mostly thrown away) -- 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: github-unsubscr...@datafusion.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For additional commands, e-mail: github-h...@datafusion.apache.org
