[jira] [Created] (ARROW-16081) Incorrect results when reading a buffer of boolean values

["Jonathan Kenyon (Jira)" <ji...@apache.org>]

Jonathan Kenyon created ARROW-16081:
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             Summary: Incorrect results when reading a buffer of boolean values
                 Key: ARROW-16081
                 URL: https://issues.apache.org/jira/browse/ARROW-16081
             Project: Apache Arrow
          Issue Type: Bug
          Components: Python
    Affects Versions: 7.0.0
         Environment: Ubuntu 20.04, Python 3.8.10, pyarrow==7.0.0
            Reporter: Jonathan Kenyon


The following reproducer demonstrates that a buffer of boolean values is not correctly recovered when using pyarrow.

{code:python}
import pyarrow.parquet as pq
import pyarrow as pa
import numpy as np

if __name__ == "__main__":

    data = np.array([True, False, True, False], dtype=bool)

    length = len(data)

    buf = pa.py_buffer(data)

    array = pa.Array.from_buffers(pa.bool_(), length, [None, buf])

    np.testing.assert_array_equal(data, array.to_numpy(zero_copy_only=False))

{code}



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