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From "Tassapol Athiapinya (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-2285) Preemption can cause capacity scheduler to show 5,000% queue absolute used capacity.
Date Tue, 15 Jul 2014 01:54:04 GMT
Tassapol Athiapinya created YARN-2285:
-----------------------------------------

             Summary: Preemption can cause capacity scheduler to show 5,000% queue absolute
used capacity.
                 Key: YARN-2285
                 URL: https://issues.apache.org/jira/browse/YARN-2285
             Project: Hadoop YARN
          Issue Type: Bug
          Components: capacityscheduler
    Affects Versions: 2.5.0
         Environment: Turn on CS Preemption.
            Reporter: Tassapol Athiapinya
         Attachments: preemption_5000_percent.png

I configure queue A, B to have 1%, 99% capacity respectively. There is no max capacity for
each queue. Set high user limit factor.
Submit app 1 to queue A. AM container takes 50% of cluster memory. Task containers take another
50%. Submit app 2 to queue B. Preempt task containers of app 1 out. Turns out capacity of
queue B increases to 99% but queue A has 5000% used.



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