[ARROW-9725] [Rust] [DataFusion] LimitExec and SortExec should use MergeExec

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: Rust, Rust - DataFusion
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/25780
• Assignee: Andy Grove
• Reporter: Andy Grove
• Created: 13/Aug/20 14:40
• Updated: 11/Jan/23 08:08
• Resolved: 13/Aug/20 22:42

Description

Both LimitExec and SortExec need to collapse inputs down to a single partition and they both contain similar code for executing their inputs on threads and combining the results. This is exactly what the MergeExec operator does, so they should just use that instead.

Issue Links

• links to: GitHub Pull Request #7954
• links to: GitHub Pull Request #7958