[YARN-3467] Expose allocatedMB, allocatedVCores, and runningContainers metrics on running Applications in RM Web UI

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.5.0
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: webapp, yarn
• Hadoop Flags: Reviewed
• Assignee: Anubhav Dhoot
• Reporter: Anthony Rojas
• Created: 08/Apr/15 18:23
• Updated: 30/Aug/16 01:24
• Resolved: 30/May/15 20:43

Description

The YARN REST API can report on the following properties:

allocatedMB: The sum of memory in MB allocated to the application's running containers
allocatedVCores: The sum of virtual cores allocated to the application's running containers
runningContainers: The number of containers currently running for the application

Currently, the RM Web UI does not report on these items (at least I couldn't find any entries within the Web UI).

It would be useful for YARN Application and Resource troubleshooting to have these properties and their corresponding values exposed on the RM WebUI.

Issue Links

• breaks: YARN-3766 ATS Web UI breaks because of YARN-3467
• breaks: YARN-3751 TestAHSWebServices fails after YARN-3467