andygrove opened a new pull request, #4846: URL: https://github.com/apache/datafusion-comet/pull/4846
## Which issue does this PR close? Documents current limitations tracked by #4764 (and #4121). Does not close them. ## Rationale for this change Comet's handling of invalid UTF-8 in native `StringType` is inconsistent and includes a latent risk. Until the unified ingress policy in #4764 lands, users should know the current behavior: the native Parquet scan errors on non-UTF-8 `STRING` columns, and non-UTF-8 bytes arriving from a JVM-side columnar source are not validated at the Arrow FFI import boundary. ## What changes are included in this PR? A concise addition to the scans compatibility guide noting the FFI-import risk and linking to the tracking issue #4764. Docs only. ## How are these changes tested? Documentation-only change; no tests. -- 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]
