[jira] [Created] (ARROW-17096) pyarrow.compute.mode for boolean arrays does not return true when mixed with false

["Matthew Roeschke (Jira)" <ji...@apache.org>]

Matthew Roeschke created ARROW-17096:
----------------------------------------

             Summary: pyarrow.compute.mode for boolean arrays does not return true when mixed with false
                 Key: ARROW-17096
                 URL: https://issues.apache.org/jira/browse/ARROW-17096
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++, Python
    Affects Versions: 8.0.0
            Reporter: Matthew Roeschke


{code:java}
In [1]: import pyarrow.compute as pc
In [2]: import pyarrow as pa
In [3]: pa.__version__
Out[3]: '8.0.0'
In [4]: pc.mode(pa.array([True, True]))
# Correct
Out[4]:
<pyarrow.lib.StructArray object at 0x1266d5c60>
-- is_valid: all not null
-- child 0 type: bool
  [
    true
  ]
-- child 1 type: int64
  [
    2
  ]
# Incorrect
In [5]: pc.mode(pa.array([True, False]), 2)
Out[5]:
<pyarrow.lib.StructArray object at 0x1262110c0>
-- is_valid: all not null
-- child 0 type: bool
  [
    false, # should be true
    false
  ]
-- child 1 type: int64
  [
    1,
    1
  ] {code}



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