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https://issues.apache.org/jira/browse/YARN-9116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16738441#comment-16738441
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Aihua Xu commented on YARN-9116:
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Thanks [~leftnoteasy] and [~cheersyang] for the suggestion. Just to clarify the
behavior: the queue's maximum-allocation will not exceed the global setting
(yarn.scheduler.capacity.maximum-allocation-mb) to keep the compatibility;
among the queues, the child inherits the setting from the parent and the child
queue can override the parent queue with larger or smaller setting but still
respecting the global setting.
That sounds reasonable to me. I will work on the support of
maximum-allocation-mb/vcores to parent queues first and have a follow up on the
general resource type.
> 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
> Attachments: YARN-9116.1.patch
>
>
> 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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