[ARROW-12289] [C++] Create basic AsyncScanner implementation

• 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/28095
• Assignee: Weston Pace
• Reporter: Weston Pace
• Created: 08/Apr/21 01:17
• Updated: 11/Jan/23 08:25
• Resolved: 19/Apr/21 19:44

Description

This will also add Async default implementations to the fragments & formats.  These will initially just defer to the synchronous implementation via the serial executor which will lead to rotten performance but we can add proper async implementations in the follow-up tasks.

Issue Links

• links to: GitHub Pull Request #10008