[SPARK-35183] CombineConcats should call transformAllExpressions

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.1.0
• Fix Version/s: 3.2.0
• Component/s: Optimizer
• Assignee: Yingyi Bu
• Reporter: Yingyi Bu
• Created: 22/Apr/21 06:57
• Updated: 22/Apr/21 13:10
• Resolved: 22/Apr/21 13:10

Description

plan transformExpressions { ... }

only applies the transformation node `plan` itself, but not its children. We should call transformAllExpressions instead of transformExpressions in CombineConcats. 

Issue Links

• links to: [Github] Pull Request #32290 (sigmod)
• links to: [Github] Pull Request #32290 (sigmod)