pola-rs/polars · error · ValueError

IcebergScanResolver: requested snapshot {snapshot_id} did no

Error message

IcebergScanResolver: requested snapshot {snapshot_id} did not contain a schema ID

What it means

Error "IcebergScanResolver: requested snapshot {snapshot_id} did not contain a schema ID" thrown in pola-rs/polars.

Source

Thrown at py-polars/src/polars/io/iceberg/_dataset.py:322

        snapshot_id = self.snapshot_id
        schema_id = None

        if snapshot_id is not None:
            snapshot = tbl.snapshot_by_id(snapshot_id)

            if snapshot is None:
                msg = f"iceberg snapshot ID not found: {snapshot_id}"
                raise ValueError(msg)

            schema_id = snapshot.schema_id

            if schema_id is None:
                msg = (
                    f"IcebergScanResolver: requested snapshot {snapshot_id} "
                    "did not contain a schema ID"
                )
                raise ValueError(msg)

            iceberg_schema = tbl.schemas()[schema_id]
            snapshot_id_key = f"{snapshot.snapshot_id}"
        else:
            iceberg_schema = tbl.schema()
            schema_id = tbl.metadata.current_schema_id

            snapshot_id_key = (
                f"{v.snapshot_id}" if (v := tbl.current_snapshot()) is not None else ""
            )

        if (
            existing_resolved_version_key is not None
            and existing_resolved_version_key == snapshot_id_key
        ):
            if verbose:
                eprint(
                    "IcebergScanResolver: to_dataset_scan(): early return "

View on GitHub (pinned to df599052da)

When it happens

Trigger: Thrown at py-polars/src/polars/io/iceberg/_dataset.py:322 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of pola-rs/polars@df599052da (2026-08-16). Data as JSON: /api/errors/991da98c3fe74406. Report an issue: GitHub.