[SPARK-22675] Refactoring PropagateTypes in TypeCoercion

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.2.0
• Fix Version/s: 2.3.0
• Component/s: SQL
• Assignee: Xiao Li
• Reporter: Xiao Li
• Created: 03/Dec/17 05:58
• Updated: 05/Dec/17 12:44
• Resolved: 05/Dec/17 12:44

Description

PropagateTypes are called at the beginning of TypeCocercion and then called at the end of TypeCocercion. Instead, we should call it in each rule that could change the data types for propagating the type changes above the parents.

Issue Links

• links to: [Github] Pull Request #19867 (gatorsmile)
• links to: [Github] Pull Request #19874 (gatorsmile)