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https://issues.apache.org/jira/browse/ARROW-585?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16764446#comment-16764446
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Wes McKinney commented on ARROW-585:
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To be clear, with this scheme client code would not have to be involved with
any of the serialization and deserialization details when consuming or
producing IPC payloads, this would all be implemented in the Arrow libraries
> [C++] Define public API for user-defined data types
> ---------------------------------------------------
>
> Key: ARROW-585
> URL: https://issues.apache.org/jira/browse/ARROW-585
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Wes McKinney
> Priority: Major
> Fix For: 0.13.0
>
>
> This will include:
> * Implementing a subclass of DataType
> * A "fallback" mechanism for receivers that do not understand our custom
> metadata
> * Implementing a serializer interface for custom metadata (to be send and
> received in an IPC setting)
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