okumin commented on PR #3288:
URL: https://github.com/apache/hive/pull/3288#issuecomment-2646143326
I would like a single source of the overview of the current strategy so that
everyone, including new people, can understand it.
- The SQL syntax of Hive can process the semantics of the "catalog" of ANSI
SQL. It means Hive users can directly identify a table with the fully qualified
triplet, e.g., `SELECT * FROM {catalog name}.{schema(database) name}.{table
name}`
- Hive Metastore can store multiple types of catalogs. I think HMS already
supports it
- A catalog in Hive Metastore can federate with an external Iceberg REST
Catalog
- Hive Metastore can behave as an Iceberg REST Catalog
- Hive Query Engine can support another catalog, such as Glue Catalog
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