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https://issues.apache.org/jira/browse/ARROW-8866?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ben Kietzman reassigned ARROW-8866:
-----------------------------------
Assignee: Ben Kietzman
> [C++] Split Type::UNION into Type::SPARSE_UNION and Type::DENSE_UNION
> ---------------------------------------------------------------------
>
> Key: ARROW-8866
> URL: https://issues.apache.org/jira/browse/ARROW-8866
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wes McKinney
> Assignee: Ben Kietzman
> Priority: Blocker
> Fix For: 1.0.0
>
>
> Similar to the recent {{Type::INTERVAL}} split, having these two array types
> which have different memory layouts under the same {{Type::type}} value makes
> function dispatch somewhat more complicated. This issue is less critical from
> INTERVAL so this may not be urgent but seems like a good pre-1.0 change
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