[HDFS-16273] RBF: RouterRpcFairnessPolicyController add availableHandleOnPerNs metrics

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.4.0
• Component/s: rbf
• Labels: pull-request-available
• Assignee: Xiangyi Zhu
• Reporter: Xiangyi Zhu
• Created: 14/Oct/21 08:19
• Updated: 08/Nov/21 00:33
• Resolved: 08/Nov/21 00:33

Description

Add the availableHandlerOnPerNs metrics to monitor whether the number of handlers configured for each NS is reasonable when using RouterRpcFairnessPolicyController.

Issue Links

• links to: GitHub Pull Request #3553