[SPARK-37557] Replace object hash with sort aggregate if child is already sorted

• Type: Sub-task
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 3.3.0
• Fix Version/s: 3.3.0
• Component/s: SQL
• Assignee: Cheng Su
• Reporter: Cheng Su
• Created: 06/Dec/21 07:35
• Updated: 07/Dec/21 04:37
• Resolved: 07/Dec/21 04:37

Description

This is a follow up of https://github.com/apache/spark/pull/34702#discussion_r762743589 , where we can replace object hash aggregate with sort aggregate as well.

Issue Links

• links to: [Github] Pull Request #34824 (c21)
• links to: [Github] Pull Request #34824 (c21)