[SPARK-28739] Add a simple cost check for Adaptive Query Execution

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 3.0.0
• Component/s: SQL
• Assignee: Wei Xue
• Reporter: Wei Xue
• Created: 15/Aug/19 00:37
• Updated: 10/Apr/20 09:25
• Resolved: 22/Aug/19 02:34

Description

Add a mechanism to compare the costs of the before and after plans of re-optimization in Adaptive Query Execution.

Issue Links

• links to: GitHub Pull Request #25456