[jira] [Commented] (ARROW-840) [Python] Provide Python API for creating user-defined data types that can survive Arrow IPC

["Rok Mihevc (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-840?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17657873#comment-17657873 ] 

Rok Mihevc commented on ARROW-840:
----------------------------------

This issue has been migrated to [issue #15390|https://github.com/apache/arrow/issues/15390] on GitHub. Please see the [migration documentation|https://github.com/apache/arrow/issues/14542] for further details.

> [Python] Provide Python API for creating user-defined data types that can survive Arrow IPC
> -------------------------------------------------------------------------------------------
>
>                 Key: ARROW-840
>                 URL: https://issues.apache.org/jira/browse/ARROW-840
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: Python
>            Reporter: Wes McKinney
>            Assignee: Antoine Pitrou
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 0.14.0
>
>          Time Spent: 4h 20m
>  Remaining Estimate: 0h
>
> The user will provide:
> * Data type subclass that can indicate the physical storage type
> * "get state" and "set state" functions for serializing custom metadata to bytes
> * An optional function for "boxing" scalar values from the physical array storage
> Internally, this will build on an analogous C++ API for defining user data types



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