[SPARK-31970] Make MDC configuration step be consistent between setLocalProperty and log4j.properties

• 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: 11/Jun/20 15:40
• Updated: 14/Jun/20 21:26
• Resolved: 14/Jun/20 21:26

Description

It's weird that we use "mdc.XXX" as key to set MDC value via `setLocalProperty` while we use "XXX" as key to set MDC pattern in log4j.properties.

Issue Links

• is caused by: SPARK-8981 Add MDC support in Executor
• links to: [Github] Pull Request #28801 (Ngone51)