[GitHub] [hadoop] slfan1989 commented on pull request #4946: YARN-11317. [Federation] Refactoring Yarn Router's About Web Page.

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slfan1989 commented on PR #4946:
URL: https://github.com/apache/hadoop/pull/4946#issuecomment-1261648084

   When displaying Federation Schedule Metric information, because scheduling information cannot be accumulated (Scheduler Type, Scheduling Resource Type, Maximum Cluster Application Priority),
   We can only display information in clusters. 
   
   There is currently no suitable interface to return this information. 
   
   We originally planned to modify it in RMWebServices#getSchedulerInfo, but found the following problems:
   
   1.getSchedulerInfo will return all the information of the queue, but we only need a few of the more critical information.
   
   2.After adding information, some unit tests have errors, because the unit tests will verify the number of fields in the returned result.
   
   I decided to create a separate new interface `getSchedulerOverview` for querying scheduling overview information. This interface will display the following information:
   
   Scheduler Type、Scheduling Resource Type、Minimum Allocation、Maximum Allocation、Maximum Cluster Application Priority、Scheduler Busy %、RM Dispatcher EventQueue Size、
   Scheduler Dispatcher EventQueue Size


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