[ARROW-13328] [C++][Dataset] Use an ExecPlan for synchronous scans or drop synchronous scans

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 7.0.0
• Component/s: C++
• Labels: dataset
• External issue URL: https://github.com/apache/arrow/issues/29004
• Assignee: Unassigned
• Reporter: Ben Kietzman
• Created: 13/Jul/21 19:44
• Updated: 11/Jan/23 08:32
• Resolved: 14/Jan/22 20:34

Description

ARROW-13238 ensured that asynchronous dataset scans are internally backed by ExecPlans, allowing easier integration with new ExecNode sinks.

However synchronous scans are still backed by FilterAndProjectScanTask and are not consumable using ExecNodes. Ideally, we should route synchronous scans through an ExecPlan as well.

Issue Links

• is depended upon by: ARROW-13340 [C++][Dataset] Simplify ScanOptions after complexity has moved to ScanNode
• relates to: ARROW-13338 [C++][Dataset] Make async Scanner the default