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https://issues.apache.org/jira/browse/ARROW-452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15889311#comment-15889311
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Wes McKinney commented on ARROW-452:
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For anyone who's wondering, the things that were prerequisites to do this were:
* Dictionary support in file format (aka Categorical or Factor types)
* 64-bit array lengths in memory
After addressing packaging and build issues for the R and Python communities,
the goal will be to transition Feather users to use the Arrow file format
internally (which is a much more general and flexible version of Feather) and
then deprecate and remove the Feather implementation. Since we've made no
guarantees of file forward compatibility this should be OK.
> [C++/Python] Merge "Feather" file format implementation
> -------------------------------------------------------
>
> Key: ARROW-452
> URL: https://issues.apache.org/jira/browse/ARROW-452
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++, Python
> Reporter: Wes McKinney
> Assignee: Wes McKinney
>
> See https://github.com/wesm/feather/tree/master/cpp -- this will assist with
> code consolidation and reconciling metadata requirements for Python and R
> users, with the goal of eventually using the Arrow IPC format for everything
> and deprecating the less-flexible Feather format / metadata.
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