[jira] [Created] (ARROW-13437) [C++] Slice of FixedSizeList fails ValidateFull

["David Li (Jira)" <ji...@apache.org>]

David Li created ARROW-13437:
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             Summary: [C++] Slice of FixedSizeList fails ValidateFull
                 Key: ARROW-13437
                 URL: https://issues.apache.org/jira/browse/ARROW-13437
             Project: Apache Arrow
          Issue Type: Bug
          Components: C++
    Affects Versions: 4.0.1
            Reporter: David Li
            Assignee: David Li


{code:python}
>>> arr = pa.array([["a", "b"], None, ["c", "d"]], pa.list_(pa.string(), 2))
>>> arr.validate(full=True)
>>> arr.slice(0, 1).validate(full=True)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "pyarrow/array.pxi", line 1219, in pyarrow.lib.Array.validate
  File "pyarrow/error.pxi", line 97, in pyarrow.lib.check_status
pyarrow.lib.ArrowInvalid: Values length (6) is not equal to the length (1) multiplied by the value size (2)
{code}
Came up while looking at ARROW-13222. I'm not sure of the check here is necessarily valid, given slicing; it should perhaps only check that values length >= length * value_size, not that they're exactly equal.



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