[SPARK-32878] Avoid scheduling TaskSetManager which has no pending tasks

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.1.0
• Fix Version/s: 3.1.0
• Component/s: Spark Core
• Assignee: wuyi
• Reporter: wuyi
• Created: 14/Sep/20 15:18
• Updated: 15/Sep/20 04:15
• Resolved: 15/Sep/20 04:15

Description

Spark always tries to schedule a TaskSetManager even if it has no pending tasks. We can skip them to avoid any potential overhead.

Issue Links

• links to: [Github] Pull Request #29750 (Ngone51)
• links to: [Github] Pull Request #29750 (Ngone51)