[YARN-11276] Add lru cache for RMWebServices.getApps

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.4.0
• Component/s: resourcemanager
• Labels: pull-request-available
• Target Version/s: 3.4.0
• Hadoop Flags: Reviewed
• Assignee: Xianming Lei
• Reporter: Xianming Lei
• Created: 23/Aug/22 08:35
• Updated: 26/May/23 12:49
• Resolved: 26/May/23 12:49

Description

In our YARN cluster, there are thousands of apps running at the same time, the return result of getApps reaches about 10M, and many requests are the same input parameters, we can add cache for RMWebServices.getApps to reduce processing delay

Issue Links

• links to: GitHub Pull Request #4793