In the python implementations both catalogs perform validations by converting the respective catalog table into an iceberg table.
As of right now those checks are missing in our catalog implementations.

Glue:

• when is the validation performed: load_table, rename_table, update_table
• impl: https://github.com/apache/iceberg-python/blob/07442cc00125ac00a91f717d9832e5479f4ff6dd/pyiceberg/catalog/glue.py#L299

Hive:

• when is the validation performed: load_table, create_table
• impl: https://github.com/apache/iceberg-python/blob/07442cc00125ac00a91f717d9832e5479f4ff6dd/pyiceberg/catalog/hive.py#L243