Siqi Li commented on YARN-3176:

If we don't allow a queue inherit properties from its parent, I am not sure 
what is the right way to fix the UI issue. For example,

1. queueMaxAppsDefault is not set 
2. parent queue have MaxAppRunning set to 50
3. child queue doesn't have MaxAppRunning set

What value should we display for the child queue, should it inherit 50 from its 

> 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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