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https://issues.apache.org/jira/browse/ARROW-1625?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16187605#comment-16187605
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ASF GitHub Bot commented on ARROW-1625:
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Github user wesm commented on the issue:
https://github.com/apache/arrow/pull/1152
Is cloudpickle only non-optional in unit tests? Why not
`pytest.importorskip` in those tests?
> [Serialization] Support OrderedDict properly
> --------------------------------------------
>
> Key: ARROW-1625
> URL: https://issues.apache.org/jira/browse/ARROW-1625
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Reporter: Philipp Moritz
> Labels: pull-request-available
>
> At the moment what happens when we serialize an OrderedDict and then
> deserialize it, it will become a normal dict! This can be reproduced with
> {code}
> import pyarrow
> import collections
> d = collections.OrderedDict([("hello", 1), ("world", 2)])
> type(pyarrow.serialize(d).deserialize())
> {code}
> which will return "dict". See also
> https://github.com/ray-project/ray/issues/1034.
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