[ARROW-2040] [Python] Deserialized Numpy array must keep ref to underlying tensor

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Fix Version/s: 0.9.0
• Component/s: Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/18019
• Assignee: Antoine Pitrou
• Reporter: Richard Shin
• Created: 26/Jan/18 05:21
• Updated: 11/Jan/23 07:18
• Resolved: 28/Feb/18 23:19

Description

pyarrow.deserialize works fine, however.

Python 2.7.12 (default, Nov 20 2017, 18:23:56)
[GCC 5.4.0 20160609] on linux2
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>>> import pyarrow as pa, numpy as np
>>> with open('test.pyarrow', 'w') as f:
...     f.write(pa.serialize(np.arange(10, dtype=np.int32)).to_buffer().to_pybytes())
...
>>> pa.read_serialized(pa.OSFile('test.pyarrow')).deserialize()
array([54846320, 0, 45484448, 0, 4, 5, 6, 7, 8, 9], dtype=int32)
>>> pa.deserialize(pa.frombuffer(open('test.pyarrow').read()))
array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9], dtype=int32)

Issue Links

• links to: GitHub Pull Request #1680