[ARROW-15849] [C++] Add a method that accepts a Substrait plan and returns a RecordBatchReader

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: C++
• Labels: substrait
• External issue URL: https://github.com/apache/arrow/issues/20139
• Assignee: Unassigned
• Reporter: Weston Pace
• Created: 04/Mar/22 17:58
• Updated: 11/Jan/23 11:40

Description

This will shield implementations from having to deal with SinkNodeConsumer. The implementation should be pretty similar to the SinkNode that we have today for exec plans. We can use a PushGenerator to be our producer/consumer queue that the RecordBatchReader consumes. The Substrait sink consumer will then push into that PushGenerator. This method would fail if the plan has more than one top-level relation (e.g. more than one sink).