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[MCC-1515548] Python Lib - Data type of fetch_data() does not match d… #51

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Merged
afieraru-mdsol merged 1 commit into from
Jun 16, 2026
Merged

[MCC-1515548] Python Lib - Data type of fetch_data() does not match d… #51

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8 changes: 7 additions & 1 deletion dataconnect/service/mappers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -64,7 +64,13 @@ def resource_to_fetched_data(table: DataTable) -> pd.DataFrame:

ipc_buffer = pa.BufferReader(table.ipc_bytes)
with pa.ipc.open_stream(ipc_buffer) as reader:
return reader.read_all().to_pandas(types_mapper=pd.ArrowDtype)
arrow_table = reader.read_all()

# Clear schema metadata so types_mapper reliably maps Arrow types to ArrowDtype
# (embedded pandas metadata can override types_mapper, causing object dtypes).
arrow_table = arrow_table.replace_schema_metadata(None)
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return arrow_table.to_pandas(types_mapper=pd.ArrowDtype)
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def resource_to_dataset(resource: ResourceInfo) -> Dataset:
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