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Posted to issues@arrow.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2019/09/18 17:09:00 UTC

[jira] [Resolved] (ARROW-2658) [Python] Serialize and Deserialize Table objects

     [ https://issues.apache.org/jira/browse/ARROW-2658?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou resolved ARROW-2658.
-----------------------------------
    Resolution: Done

This was fixed a long time ago, closing.

> [Python] Serialize and Deserialize Table objects
> ------------------------------------------------
>
>                 Key: ARROW-2658
>                 URL: https://issues.apache.org/jira/browse/ARROW-2658
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: Python
>            Reporter: Kunal Gosar
>            Priority: Major
>
> Add support for serializing and deserializing pyarrow Tables. This would allow using Table objects in plasma and DataFrames can be converted to a Table object as intermediary for serialization. Currently I see the following when trying this operation:
> {code:java}
> In [36]: pa.serialize(t)
> ---------------------------------------------------------------------------
> SerializationCallbackError                Traceback (most recent call last)
> <ipython-input-36-48cee5dfe30a> in <module>()
> ----> 1 pa.serialize(t)
> ~/dev/arrow/python/pyarrow/serialization.pxi in pyarrow.lib.serialize()
>     336
>     337     with nogil:
> --> 338         check_status(SerializeObject(context, wrapped_value, &serialized.data))
>     339     return serialized
>     340
> ~/dev/arrow/python/pyarrow/serialization.pxi in pyarrow.lib.SerializationContext._serialize_callback()
>     134
>     135         if not found:
> --> 136             raise SerializationCallbackError(
>     137                 "pyarrow does not know how to "
>     138                 "serialize objects of type {}.".format(type(obj)), obj
> SerializationCallbackError: pyarrow does not know how to serialize objects of type <class 'pyarrow.lib.Table'>.
> {code}



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