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

[Michael Smith]

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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