<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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--></style></head><body lang=EN-US link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>In our stac geoparquet files, we are getting warning/errors (depending on cli vs python) on unhandled type:large list<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Warning 1: Field proj.shape of unhandled type large_list<element: int64> ignored<o:p></o:p></p><p class=MsoNormal>Warning 1: Field stac_extensions of unhandled type large_list<element: large_string> ignored<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Or <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>GDAL_ERROR 1: b'Field stac_extensions of unhandled type large_list<element: large_string> ignored'<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m using polars and pyogrio (polars-st) to write the data and the schema is defined as <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>extensionschema = pl.List(pl.Utf8)<o:p></o:p></p><p class=MsoNormal>proj.shape = pl.List(pl.Int64)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The columns are not reported in the column list and are not present when converting the data to another parquet file.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>This is GDAL 3.12.3 "Chicoutimi", released 2026/03/17 installed via conda forge.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal><span style='font-family:"Aptos",sans-serif;mso-ligatures:none'>-- <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Aptos",sans-serif;mso-ligatures:none'>Michael Smith<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Aptos",sans-serif;mso-ligatures:none'>RSGIS Center – ERDC CRREL NH<o:p></o:p></span></p></div></div><p class=MsoNormal><span style='font-family:"Aptos",sans-serif;mso-ligatures:none'>US Army Corps</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>