[ARROW-18347] [C++] Hook up cancellation to exec plan

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: C++
• External issue URL: https://github.com/apache/arrow/issues/33515
• Assignee: Unassigned
• Reporter: Weston Pace
• Created: 17/Nov/22 06:31
• Updated: 11/Jan/23 11:59

Description

There are two ways to cancel an exec plan. A call to StopProducing and cancelling the task group. Investigate which makes the most sense and then configure the DeclarationToReader method to support cancelling on discard.