[SPARK-32822] Change the number of partitions to zero when a range is empty with WholeStageCodegen disabled or falled back

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.1.0
• Fix Version/s: 3.1.0
• Component/s: SQL
• Assignee: Kousuke Saruta
• Reporter: Kousuke Saruta
• Created: 08/Sep/20 11:10
• Updated: 11/Sep/20 00:12
• Resolved: 11/Sep/20 00:12

Description

If WholeStageCodegen effects, the number of partitions of an empty range will be changed to zero. But it doesn't changed when WholeStageCodegen is disabled or falled back.

Issue Links

• links to: [Github] Pull Request #29681 (sarutak)