Thomas Graves created YARN-3432:

             Summary: Cluster metrics have wrong Total Memory when there is 
reserved memory on CS
                 Key: YARN-3432
             Project: Hadoop YARN
          Issue Type: Bug
          Components: capacityscheduler, resourcemanager
    Affects Versions: 2.6.0
            Reporter: Thomas Graves

I noticed that when reservations happen when using the Capacity Scheduler, the 
UI and web services report the wrong total memory.

For example.  I have a 300GB of total memory in my cluster.  I allocate 50 and 
I reserve 10.  The cluster metrics for total memory get reported as 290GB.

This was broken by so perhaps 
there is a difference between fair scheduler and capacity scheduler.

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