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https://issues.apache.org/jira/browse/YARN-3176?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14661153#comment-14661153
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Ashwin Shankar commented on YARN-3176:
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It depends on the use case, if a user has lots of queues, and wants the default
value to be take effect, then based on your proposal he has to configure
maxRunningApps="default" for every one of them, which can be painful. Also I
don't think we want to inherit queue properties like minshare, weight which are
queue specific properties and won't make sense inheriting.
My 2 cents : in the example you described above( grandparent -> parent ->
child), if you think that's a corner case and if its just about configuring one
queue, would it work for you to just set maxApp at parent to >50, so that child
queue can run 50 apps ?
[[email protected]], [~asuresh] thoughts on all of this ?
> 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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