nevzheng opened a new issue, #12070: URL: https://github.com/apache/gravitino/issues/12070
### Describe the subtask Complete and document the five-family compatibility contract for ClickHouse. **Compatibility outcomes** - **Nanosecond timestamps:** Round-trip `timestamp(9)` and `timestamp_tz(9)` exactly through `DateTime64(9)`; use explicit UTC for timezone-aware values, keep native non-UTC zones external, and reject precision 10 through 12. - **Variant:** Reject because ClickHouse alternatives require a closed type set. - **Unknown/Null:** Reject. - **Geometry:** Reject because ClickHouse shape types do not preserve CRS metadata. - **Geography:** Reject because ClickHouse types do not preserve CRS and edge-algorithm metadata. **Acceptance** - Reproduce all five families through the connector's public create/conversion path and its alter/load paths where supported. - A supported mapping must round-trip without losing type identity or parameters. - An unsupported mapping must return `IllegalArgumentException` before external metadata mutation; no fallback to a narrower or opaque type is allowed. - Cover nested types where the connector supports complex columns. - Add focused converter/operation tests and an integration or no-side-effect test appropriate to the connector. - Update the connector documentation with a five-family compatibility matrix and rejection rationale. - Keep implementation commits atomic by connector and type family. **Connector-specific verification** Reproduce exact timestamp round trips and rejected Docker creates, verifying no table side effects. Cover converter, custom operation, and full connector test paths. **Documentation** `docs/jdbc-clickhouse-catalog.md` ### Parent issue #12056 -- 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]
