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fix: Fix issue mishandling chunked array while loading data #2051

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Merged
merged 1 commit into from
Sep 5, 2025
Merged

fix: Fix issue mishandling chunked array while loading data #2051

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5 changes: 4 additions & 1 deletion bigframes/core/local_data.py
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Original file line number Diff line number Diff line change
Expand Up @@ -277,7 +277,10 @@ def _adapt_pandas_series(
)
return pa.array(series, type=pa.string()), bigframes.dtypes.GEO_DTYPE
try:
return _adapt_arrow_array(pa.array(series))
pa_arr = pa.array(series)
if isinstance(pa_arr, pa.ChunkedArray):
return _adapt_chunked_array(pa_arr)
return _adapt_arrow_array(pa_arr)
except pa.ArrowInvalid as e:
if series.dtype == np.dtype("O"):
try:
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10 changes: 10 additions & 0 deletions tests/system/small/test_dataframe.py
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Original file line number Diff line number Diff line change
Expand Up @@ -138,6 +138,16 @@ def test_df_construct_structs(session):
)


def test_df_construct_local_concat_pd(scalars_pandas_df_index, session):
pd_df = pd.concat([scalars_pandas_df_index, scalars_pandas_df_index])

bf_df = session.read_pandas(pd_df)

pd.testing.assert_frame_equal(
bf_df.to_pandas(), pd_df, check_index_type=False, check_dtype=False
)


def test_df_construct_pandas_set_dtype(scalars_dfs):
columns = [
"int64_too",
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