[gdal-dev] Parquet error/warning on large list columns

[Even Rouault]

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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> gdal-dev at lists.osgeo.org
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-- 
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