Ashwin Shankar commented on YARN-3176:

Yeah, thats a problem. Maybe we should display the child queue's maxApp to say 
"Not configured"(or something along those lines) in those cases instead of 
Integer.MAX_VALUE ? Ideally we would want to show maxApps = 50 on the parent 
queue on the UI, but unfortunately I believe the scheduler page supports "Queue 
status" box(the box that shows up when we click on the arrow on the left of a 
leaf queue) only for leaf queues and not parent queues.

> In Fair Scheduler, child queue should inherit maxApp from its parent
> --------------------------------------------------------------------
>                 Key: YARN-3176
>                 URL: https://issues.apache.org/jira/browse/YARN-3176
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Siqi Li
>            Assignee: Siqi Li
>         Attachments: YARN-3176.v1.patch, YARN-3176.v2.patch
> if the child queue does not have a maxRunningApp limit, it will use the 
> queueMaxAppsDefault. This behavior is not quite right, since 
> queueMaxAppsDefault is normally a small number, whereas some parent queues do 
> have maxRunningApp set to be more than the default

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