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GH-39440: [Python] Calling pyarrow.dataset.ParquetFileFormat.make_write_options as a class method results in a segfault #40976

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Apr 5, 2024
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GH-39440: [Python] Calling pyarrow.dataset.ParquetFileFormat.make_write_options as a class method results in a segfault #40976

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5e96d8e
Initial commit
AlenkaF Apr 3, 2024
b09cae7
Add comment about the rationale
AlenkaF Apr 4, 2024
d2c6efb
Update python/pyarrow/_dataset_parquet.pyx
AlenkaF Apr 4, 2024
5e895f2
Update test and move to test_dataset.py
AlenkaF Apr 4, 2024
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3 changes: 3 additions & 0 deletions python/pyarrow/_dataset_parquet.pyx
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Original file line number Diff line number Diff line change
Expand Up @@ -198,6 +198,9 @@ cdef class ParquetFileFormat(FileFormat):
-------
pyarrow.dataset.FileWriteOptions
"""
if not isinstance(self, ParquetFileFormat):
raise TypeError("pyarrow.dataset.ParquetFileFormat() must be initiated"
" before calling make_write_options()")
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opts = FileFormat.make_write_options(self)
(<ParquetFileWriteOptions> opts).update(**kwargs)
return opts
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12 changes: 12 additions & 0 deletions python/pyarrow/tests/test_dataset_encryption.py
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Expand Up @@ -215,3 +215,15 @@ def unwrap_key(self, wrapped_key: bytes, _: str) -> bytes:
dataset = ds.dataset(path, format=file_format, filesystem=mockfs)
new_table = dataset.to_table()
assert table == new_table


def test_make_write_options_error():
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# GH-39440
msg = "ParquetFileFormat\\(\\) must be initiated before calling make_write_options"
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with pytest.raises(TypeError, match=msg):
pa.dataset.ParquetFileFormat.make_write_options(43)

pformat = pa.dataset.ParquetFileFormat()
msg = "make_write_options\\(\\) takes exactly 0 positional arguments"
with pytest.raises(TypeError, match=msg):
pformat.make_write_options(43)
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