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From "Tassapol Athiapinya (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-2285) Preemption can cause capacity scheduler to show 5,000% queue capacity.
Date Tue, 15 Jul 2014 21:43:05 GMT

     [ https://issues.apache.org/jira/browse/YARN-2285?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tassapol Athiapinya updated YARN-2285:
--------------------------------------

      Priority: Minor  (was: Major)
    Issue Type: Improvement  (was: Bug)
       Summary: Preemption can cause capacity scheduler to show 5,000% queue capacity.  (was:
Preemption can cause capacity scheduler to show 5,000% queue absolute used capacity.)

> Preemption can cause capacity scheduler to show 5,000% queue capacity.
> ----------------------------------------------------------------------
>
>                 Key: YARN-2285
>                 URL: https://issues.apache.org/jira/browse/YARN-2285
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: capacityscheduler
>    Affects Versions: 2.5.0
>         Environment: Turn on CS Preemption.
>            Reporter: Tassapol Athiapinya
>            Priority: Minor
>         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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