feat: add support for multipart namespaces#2629
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feat: add support for multipart namespaces#2629dingo4dev wants to merge 3 commits intoapache:mainfrom
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Enables catalogs to support hierarchical organization of tables through multi-part namespaces. Introduces changes to the Catalog class and its implementations (DynamoDB, REST, SQL) to handle multi-part namespaces. A new document is added to explain the usage of the multi-part namespace feature. enable multipart namespace Multipart namespace efers to a namespace that is structured with multiple levels or parts and default separated by a delmiiter dot (`.`)
improved type handling and added utility methods
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Rationale for this change
This PR introduces support for multi-part namespaces, enabling more flexible and organized data layouts. This feature allows users to structure their tables within nested hierarchies (e.g.,
('database', 'schema', 'table')), which is a common pattern in many data warehouse systems.The level of support varies depending on the underlying catalog implementation. Here's a summary of the changes:
closes #2240
Are these changes tested?
Yes, this PR includes comprehensive test coverage:
test_list_multipart_namespaces_200()intests/catalog/test_rest.pyto verify multi-part namespace listing via REST APImkdocs/docs/multi-part-namespace.mdwith usage examples and catalog compatibility matrixAre there any user-facing changes?
Yes, this introduces a new user-facing feature:
Breaking changes: None. This is a backward-compatible addition.
New capabilities:
catalog.create_table("database.schema.table", ...)).) is used consistently across catalog implementationsAPI changes:
Catalogclass now exposes_support_namespacesattribute to indicate multi-part namespace supportnamespace_level()for determining namespace depthidentifier_to_database()and related methods to handle multi-part identifiersDocumentation:
multi-part-namespace.md) explains usage patterns and catalog-specific support