[jira] [Commented] (ARROW-3399) [Python] Cannot serialize numpy matrix object

["Robert Nishihara (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-3399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16807314#comment-16807314 ] 

Robert Nishihara commented on ARROW-3399:
-----------------------------------------

Hi Mitar, can you submit your change as a PR? I suspect some minor modifications will make it work and it will be easier to comment there. Also please add a test.

> [Python] Cannot serialize numpy matrix object
> ---------------------------------------------
>
>                 Key: ARROW-3399
>                 URL: https://issues.apache.org/jira/browse/ARROW-3399
>             Project: Apache Arrow
>          Issue Type: Bug
>    Affects Versions: 0.10.0
>            Reporter: Mitar
>            Priority: Major
>             Fix For: 0.14.0
>
>
> This is a regression from 0.9.0 and happens with 0.10.0 with Python 3.6.5 on Linux.
> {code:java}
> from pyarrow import plasma
> import numpy
> import time
> import subprocess
> import os
> import signal
> m = numpy.matrix(numpy.array([[1, 2], [3, 4]]))
> process = subprocess.Popen(['plasma_store', '-m', '1000000', '-s', '/tmp/plasma', '-d', '/dev/shm'], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, encoding='utf8', preexec_fn=os.setpgrp)
> time.sleep(5)
> client = plasma.connect('/tmp/plasma', '', 0)
> try:
>     client.put(m)
> finally:
>     client.disconnect()
>     os.killpg(os.getpgid(process.pid), signal.SIGTERM)
> {code}
> Error:
> {noformat}
>   File "pyarrow/_plasma.pyx", line 397, in pyarrow._plasma.PlasmaClient.put
>   File "pyarrow/serialization.pxi", line 338, in pyarrow.lib.serialize
>   File "pyarrow/error.pxi", line 89, in pyarrow.lib.check_status
> pyarrow.lib.ArrowNotImplementedError: This object exceeds the maximum recursion depth. It may contain itself recursively.{noformat}



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