[SPARK-35448] Subexpression elimination enhancements

• Type: Umbrella
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2.0
• Component/s: SQL
• Assignee: Unassigned
• Reporter: L. C. Hsieh
• Created: 19/May/21 19:31
• Updated: 15/Jun/21 06:23
• Resolved: 15/Jun/21 06:23

Sub-Tasks

• Children subexpr should come first than parent subexpr in subexpression elimination: Resolved
• Unused subexpressions leftover in WholeStageCodegen subexpression elimination: Resolved
• Should not extract common expressions from value expressions when elseValue is empty in CaseWhen: Resolved
• Remove redundant subexpression evaluation in nested subexpressions: Resolved