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https://issues.apache.org/jira/browse/YARN-9116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16721066#comment-16721066
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Weiwei Yang commented on YARN-9116:
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The logic to inherit should not be a problem. I mean we could still hornor
global value if it is set (the old logic not changed). If global value is not
set, then we just enforce the check with the queue level configs, and that
allows a leaf queue has its own max. Would that make our configuration simpler?
I have no problem to add a new config if we run out of options, given we
already have a lot of configurations.
> Capacity Scheduler: add the default maximum-allocation-mb and
> maximum-allocation-vcores for the queues
> ------------------------------------------------------------------------------------------------------
>
> Key: YARN-9116
> URL: https://issues.apache.org/jira/browse/YARN-9116
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: capacity scheduler
> Affects Versions: 2.7.0
> Reporter: Aihua Xu
> Assignee: Aihua Xu
> Priority: Major
>
> YARN-1582 adds the support of maximum-allocation-mb configuration per queue
> which is targeting to support larger container features on dedicated queues
> (larger maximum-allocation-mb/maximum-allocation-vcores for such queue) .
> While to achieve larger container configuration, we need to increase the
> global maximum-allocation-mb/maximum-allocation-vcores (e.g. 120G/256) and
> then override those configurations with desired values on the queues since
> queue configuration can't be larger than cluster configuration. There are
> many queues in the system and if we forget to configure such values when
> adding a new queue, then such queue gets default 120G/256 which typically is
> not what we want.
> We can come up with a queue-default configuration (set to normal queue
> configuration like 16G/8), so the leaf queues gets such values by default.
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