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https://issues.apache.org/jira/browse/ARROW-1625?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16187514#comment-16187514
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ASF GitHub Bot commented on ARROW-1625:
---------------------------------------
GitHub user pcmoritz opened a pull request:
https://github.com/apache/arrow/pull/1152
ARROW-1625: [Serialization] Support OrderedDict and defaultdict
serialization
If anybody has an idea on how to make Travis happy without making
cloudpickle a runtime dependency (it is only needed for the tests) please let
me know!
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/pcmoritz/arrow pydict-exact2
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/arrow/pull/1152.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1152
----
commit 799d983ef3eb735095949233fc57627cdf4fb110
Author: Philipp Moritz <[email protected]>
Date: 2017-09-29T18:39:01Z
do not interpret OrderedDict as dict
commit db19ab9b4a796b00ba439a162e5362c1b0f8abc2
Author: Philipp Moritz <[email protected]>
Date: 2017-09-30T00:45:31Z
add tests
commit 052b1aa9a023a67fa44eea271735f8d23ade0eaa
Author: Philipp Moritz <[email protected]>
Date: 2017-10-01T19:39:06Z
I'd prefer this not to be a runtime dependency
----
> [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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