Hi Mike,

fix in https://github.com/OSGeo/gdal/pull/14326

Even

Le 11/04/2026 à 15:20, Michael Smith via gdal-dev a écrit :

In our stac geoparquet files, we are getting warning/errors (depending on cli vs python) on unhandled type:large list

Warning 1: Field proj.shape of unhandled type large_list<element: int64> ignored

Warning 1: Field stac_extensions of unhandled type large_list<element: large_string> ignored

Or

GDAL_ERROR 1: b'Field stac_extensions of unhandled type large_list<element: large_string> ignored'

I’m using polars and pyogrio (polars-st) to write the data and the schema is defined as

extensionschema = pl.List(pl.Utf8)

proj.shape = pl.List(pl.Int64)

The columns are not reported in the column list and are not present when converting the data to another parquet file.

This is GDAL 3.12.3 "Chicoutimi", released 2026/03/17 installed via conda forge.

--

Michael Smith

RSGIS Center – ERDC CRREL NH

US Army Corps


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