Getting pydantic validation error while calling 'load_namespace_properties' method

[lamsalab]

Apache Iceberg version

0.11.0 (latest release)

Please describe the bug 🐞

I am trying to connect to a rest catalog exposed by AWS S3 Tables as documented here. The code snippet that I have is:

rest_catalog = load_catalog(
  catalog_name,
  **{
    'type': 'rest',    
    'warehouse':'arn:aws:s3tables:<Region>:<accountID>:bucket/<bucketname>',
    'uri': 'https://s3tables/.<Region>.amazonaws.com/iceberg',
    'rest.sigv4-enabled': 'true',
    'rest.signing-name': 's3tables',
    'rest.signing-region': '<Region>'
  }
rest_catalog.load_namespace_properties('my_namespace')
)

However, I got an error:

1 validation error for NamespaceResponse
properties
  Field required [type=missing, input_value={'namespace': ['my_namespace']}, input_type=dict]
    For further information visit https://errors.pydantic.dev/2.12/v/missing

I dug deeper into the open api spec for GET /v1/{prefix}/namespaces/{namespace} and looks like properties is NOT a required field in the response; hence, the response from AWS matches the specification. However, looks like the pydantic validation on iceberg side does not account for that.

Link to the method definition.

Please let me know if I misunderstood something.

Willingness to contribute

• I can contribute a fix for this bug independently
• I would be willing to contribute a fix for this bug with guidance from the Iceberg community
• I cannot contribute a fix for this bug at this time