Daniel Templeton created YARN-6986:

             Summary: Fair scheduler should add a SchedulerMetrics class
                 Key: YARN-6986
                 URL: https://issues.apache.org/jira/browse/YARN-6986
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: fairscheduler
    Affects Versions: 3.0.0-alpha4
            Reporter: Daniel Templeton

Especially now that ATSv2 is almost here, it would be very helpful if the fair 
scheduler offered scheduler metrics, like # pending requests, # running 
containers, # preemptions, size of the event queue, etc.

Currently I see cluster metrics, queue metrics, and scheduler operation 
duration metrics, but no top-level scheduler metrics.

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