puchengy opened a new issue, #11782: URL: https://github.com/apache/gravitino/issues/11782
### Describe the feature Add a `hive` namespace backend to the Lance REST server so Lance tables can be managed in a Hive Metastore (HMS), the same way the Iceberg REST server already supports HMS. A namespace would map to a Hive database (1 level) and a table to `db.table` (2 levels). Lance tables are registered as `EXTERNAL_TABLE`s carrying `table_type=lance`. The backend acts purely as a pointer registry (`managedVersioning=false`) — it never writes Lance data — which matches the existing Gravitino backend and the Lance namespace reference implementations. ### Motivation Today Lance tables can only be cataloged through the Gravitino backend. Many deployments already operate a Hive Metastore as their central metadata service; a Hive backend lets them register and discover Lance tables there without standing up additional infrastructure. ### Describe the solution Register a new `HIVE` value in the existing `LanceNamespaceBackend` enum plug-point (no REST-server wiring changes), backed by a `HiveLanceNamespaceWrapper` that talks to HMS through a pooled `IMetaStoreClient` (compiled against Hive 2.3.9). Add config keys `hive-metastore-uris`, `hive-warehouse`, and `hive-client-pool-size`. ### Additional context This is the first of two steps; a follow-up will swap in an mTLS Hive client at the `HiveClientPool.newClient()` seam. -- 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]
