[SPARK-31683] Make Prometheus output consistent with DropWizard 4.1 result

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 3.0.0
• Component/s: Spark Core
• Assignee: Dongjoon Hyun
• Reporter: Dongjoon Hyun
• Created: 12/May/20 04:21
• Updated: 08/Jun/20 20:31
• Resolved: 18/May/20 00:57

Description

SPARK-29032 adds Prometheus support.

After that, SPARK-29674 upgraded DropWizard for JDK9+ support and causes difference in output labels and number of keys.

 

This issue aims to fix this inconsistency in Spark.

Issue Links

• links to: [Github] Pull Request #28510 (dongjoon-hyun)
• links to: [Github] Pull Request #28510 (dongjoon-hyun)