liubin101 opened a new pull request, #7753:
URL: https://github.com/apache/hadoop/pull/7753

   ### Description of PR
   Now when doing non-exclusive resource allocation, queue's max capacity on 
the partition will be considered to be 100%. In an ideal situation, preemption 
policy will reclaim resource back when partitoned-resource-request comes back.
   
   But our cluster has not enabled preemption, so a queue may use all resource 
on the partition and block the partitoned-resource-request of other queues.
   
   In this situation, we hope queue's max capacity will be respect when doing 
non-exclusive resource allocation.
   
   ### How was this patch tested?
   unit test
   
   


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