[ARROW-11883] [C++] Add ConcatMap, MergeMap, and an async-reentrant version of Map

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/27725
• Assignee: Weston Pace
• Reporter: Weston Pace
• Created: 05/Mar/21 22:05
• Updated: 11/Jan/23 08:22
• Resolved: 24/Mar/21 11:49

Description

These are all needed for the current ARROW-7001 work.  I'm breaking them out on their own so they can be reviewed in isolation.

Issue Links

• links to: GitHub Pull Request #9643