sdf-jkl opened a new pull request, #12033: URL: https://github.com/apache/arrow-rs/pull/12033
# Which issue does this PR close? Follow-up to #12005; relates to #11952. # Rationale for this change Schema-only consumers still need `parquet-variant` to use `VariantType`, and `Field::try_canonical_extension_type` does not recognize `arrow.parquet.variant`. Hosting the descriptor alongside the other canonical extensions lets these consumers use `arrow-schema` directly. # What changes are included in this PR? Move `VariantType` into `arrow-schema`'s canonical extensions and register `CanonicalExtensionType::Variant`. Re-export the same type from `parquet-variant`, preserving the existing compute and Parquet import paths. Metadata handling and storage validation are unchanged; #11938 remains separate. # Are these changes tested? The moved unit test retains the existing storage-type checks and now verifies canonical extension lookup. Existing Variant compute doctests and Parquet Variant tests exercise the retained import paths. # Are there any significant user-facing changes? Existing imports remain compatible. Direct `arrow-schema` users need its `canonical_extension_types` feature. `parquet-variant` now enables that feature to retain its unconditional re-export, which also enables `serde_core` and `serde_json` dependencies in `arrow-schema`. Implementation and test changes prepared with Codex. -- 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]
