[ARROW-13598] [C++] Deprecate Datum::COLLECTION

• Type: Task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 7.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/29242
• Assignee: Antoine Pitrou
• Reporter: Antoine Pitrou
• Created: 10/Aug/21 15:31
• Updated: 11/Jan/23 08:34
• Resolved: 16/Dec/21 18:36

Description

It looks like "collection" datums are not used anywhere. Where we want to return several pieces of data, we generally return a Struct array or scalar wrapping them.

Perhaps we should simply deprecate or even remove them.

Issue Links

• links to: GitHub Pull Request #11979