Sergey Mozharov created ARROW-16174:
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Summary: FixedSizeListArray.flatten() ignores slicing offsets
Key: ARROW-16174
URL: https://issues.apache.org/jira/browse/ARROW-16174
Project: Apache Arrow
Issue Type: Bug
Components: Python
Affects Versions: 7.0.0
Environment: Windows 10
Reporter: Sergey Mozharov
Related to ARROW-7362, which is not resolved for fixed size arrays:
{code:java}
import pyarrow as pa
array = pa.array([[1], [2], [3]], type=pa.list_(pa.float64(), list_size=1))
assert array[2:].flatten() != array.flatten() # <-- assertion fails
# expected behavior
assert array[2:].flatten() == pa.array([3], type=pa.float64()){code}
Variable size lists behave as expected:
{code:java}
array = pa.array([[1], [2], [3]], type=pa.list_(pa.float64()))
assert array[2:].flatten() != array.flatten() # pass
assert array[2:].flatten() == pa.array([3], type=pa.float64()) # pass{code}
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