[jira] [Updated] (ARROW-2040) [Python] Deserialized Numpy array must keep ref to underlying tensor

["Antoine Pitrou (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-2040?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou updated ARROW-2040:
----------------------------------
    Component/s: Python

> [Python] Deserialized Numpy array must keep ref to underlying tensor
> --------------------------------------------------------------------
>
>                 Key: ARROW-2040
>                 URL: https://issues.apache.org/jira/browse/ARROW-2040
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Python
>    Affects Versions: 0.8.0
>            Reporter: Richard Shin
>            Assignee: Antoine Pitrou
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 0.9.0
>
>
> pyarrow.deserialize works fine, however.
> {code:python}
> Python 2.7.12 (default, Nov 20 2017, 18:23:56)
> [GCC 5.4.0 20160609] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> >>> 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)
> {code}



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