Naganarasimha G R commented on YARN-4425:

Thanks for the feedback [~wangda], 
bq. I felt proposed solution should be doable, maybe it will be more helpful to 
understand what's the scope after you finish doing a POC.  
bq. maybe we can consider to merge two policies to one: 
Will try to share the POC at the earliest, anyway based on it we can get the 
further modifications done .

> Pluggable sharing policy for Partition Node Label resources
> -----------------------------------------------------------
>                 Key: YARN-4425
>                 URL: https://issues.apache.org/jira/browse/YARN-4425
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacity scheduler, resourcemanager
>            Reporter: Naganarasimha G R
>            Assignee: Naganarasimha G R
>         Attachments: ResourceSharingPolicyForNodeLabelsPartitions-V1.pdf
> As part of support for sharing NonExclusive Node Label partitions in 
> YARN-3214, NonExclusive partitions are shared only to Default Partitions and 
> also have fixed rule when apps in default partitions makes use of resources 
> of any NonExclusive partitions.
> There are many scenarios where in we require pluggable policy like 
> MutliTenant, Hierarchical etc.. where in each partition can determine when 
> they want to share the resources to other paritions and when other partitions 
> wants to use resources from others
> More details in the attached document.

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