cdelmonte-zg commented on PR #9855: URL: https://github.com/apache/arrow-rs/pull/9855#issuecomment-4353542265
> Received confirmation that this fixes the downstream issue so marking as ready. > > @cdelmonte-zg one thing this fix doesn't do is preserve the physical type upon write...it will revert to `INT32 (UNKNOWN)`. If that's a requirement we'll need a follow-up. Thanks @etseidl, no follow-up needed for the delta-kernel-rs side. The kernel strips void columns from the physical write schema before handing data to the parquet writer (it's a deliberate design choice from the Delta protocol, void columns are never materialized in data files). So kernel never writes a Null/UNKNOWN column; it only needs to read what other writers (Spark, in the DAT cases) produced. Read-side correctness is all that #9855 needs to provide. -- 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]
