[YARN-8559] Expose mutable-conf scheduler's configuration in RM /scheduler-conf endpoint

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.10.0, 3.2.0, 3.0.4, 3.1.2
• Component/s: resourcemanager
• Target Version/s: 3.2.0, 3.0.3, 3.1.2
• Hadoop Flags: Reviewed
• Assignee: Weiwei Yang
• Reporter: Anna Savarin
• Created: 20/Jul/18 12:58
• Updated: 20/Sep/19 00:10
• Resolved: 13/Aug/18 03:50

Description

All Hadoop services provide a set of common endpoints (/stacks, /logLevel, /metrics, /jmx, /conf).  In the case of the Resource Manager, part of the configuration comes from the scheduler being used.  Currently, these configuration key/values are not exposed through the /conf endpoint, thereby revealing an incomplete configuration picture. 

Make an improvement and expose the scheduling configuration info through the RM's /conf endpoint.

Issue Links

• is duplicated by: YARN-6731 Add ability to export scheduler configuration XML
• is related to: YARN-9781 SchedConfCli to get current stored scheduler configuration
• relates to: HDDS-818 OzoneConfiguration uses an existing XMLRoot value