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https://issues.apache.org/jira/browse/YARN-10505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17335286#comment-17335286
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Andras Gyori commented on YARN-10505:
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This will be covered in YARN-9936. Closing it.
> Extend the maximum-capacity property to react to weight mode changes
> --------------------------------------------------------------------
>
> Key: YARN-10505
> URL: https://issues.apache.org/jira/browse/YARN-10505
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Benjamin Teke
> Priority: Major
>
> The property root.users.maximum-capacity could mean the following things:
> * Relative Percentage: maximum capacity relative to its parent. If it’s set
> to 50, then it means that the capacity is capped with respect to the parent.
> * Absolute Percentage: maximum capacity expressed as a percentage of the
> overall cluster capacity.
> * Percentages of different resource types: this would refer to vCores,
> memory, GPU, etc... Similarly to the single percentage value, this could
> either mean percentage of the parent or percentage of the overall cluster
> resource.
> * Absolute limit: explicit definition of vCores and memory like vcores=20,
> memory-mb=16384.
>
> Note that Fair Scheduler supports the following settings:
> * Single percentage (absolute)
> * Two percentages (absolute)
> * Absolute resources
>
> It is recommended that all three formats are supported for maximum-capacity
> after introducing weight mode. The final form of the configuration for
> example could look like this:
> root.users.maximum-capacity = 100% - single percentage
> root.users.maximum-capacity = (vcores=100%, memory-mb=100%) - two percentages
> root.users.maximum-capacity = (vcores=10, memory-mb=10000mb) - absolute
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