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Posted to jira@arrow.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2021/11/23 19:06:00 UTC

[jira] [Commented] (ARROW-4975) [C++] Support concatenation of UnionArrays

    [ https://issues.apache.org/jira/browse/ARROW-4975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17448225#comment-17448225 ] 

Antoine Pitrou commented on ARROW-4975:
---------------------------------------

This should be almost trivial for sparse unions and would require a bit more care for dense unions.

> [C++] Support concatenation of UnionArrays
> ------------------------------------------
>
>                 Key: ARROW-4975
>                 URL: https://issues.apache.org/jira/browse/ARROW-4975
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: C++
>            Reporter: Ben Kietzman
>            Priority: Minor
>              Labels: good-first-issue, good-second-issue
>             Fix For: 7.0.0
>
>
> https://github.com/apache/arrow/pull/3746 adds support for concatenation of arrays, but UnionArrays are not supported.



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