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https://issues.apache.org/jira/browse/YARN-3945?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Naganarasimha G R updated YARN-3945:
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    Attachment: YARN-3945.20150728-1.patch

> maxApplicationsPerUser is wrongly calculated
> --------------------------------------------
>
>                 Key: YARN-3945
>                 URL: https://issues.apache.org/jira/browse/YARN-3945
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>    Affects Versions: 2.7.1
>            Reporter: Naganarasimha G R
>            Assignee: Naganarasimha G R
>         Attachments: YARN-3945.20150728-1.patch
>
>
> maxApplicationsPerUser is currently calculated based on the formula
> {{maxApplicationsPerUser = (int)(maxApplications * (userLimit / 100.0f) * 
> userLimitFactor)}} but description of userlimit is 
> {quote}
> Each queue enforces a limit on the percentage of resources allocated to a 
> user at any given time, if there is demand for resources. The user limit can 
> vary between a minimum and maximum value.{color:red} The the former (the 
> minimum value) is set to this property value {color} and the latter (the 
> maximum value) depends on the number of users who have submitted 
> applications. For e.g., suppose the value of this property is 25. If two 
> users have submitted applications to a queue, no single user can use more 
> than 50% of the queue resources. If a third user submits an application, no 
> single user can use more than 33% of the queue resources. With 4 or more 
> users, no user can use more than 25% of the queues resources. A value of 100 
> implies no user limits are imposed. The default is 100. Value is specified as 
> a integer.
> {quote}
> configuration related to minimum limit should not be made used in a formula 
> to calculate max applications for a user



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