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https://issues.apache.org/jira/browse/YARN-7612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16289699#comment-16289699
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Arun Suresh commented on YARN-7612:
-----------------------------------

bq. btw what is spi? is it a typo?
SPI stands for [service provider 
interface|https://en.wikipedia.org/wiki/Service_provider_interface]. Think it 
is more applicable here - since we are talking about pluggable components

> Add Placement Processor and planner framework
> ---------------------------------------------
>
>                 Key: YARN-7612
>                 URL: https://issues.apache.org/jira/browse/YARN-7612
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Arun Suresh
>            Assignee: Arun Suresh
>         Attachments: YARN-7612-YARN-6592.001.patch, 
> YARN-7612-YARN-6592.002.patch, YARN-7612-YARN-6592.003.patch, 
> YARN-7612-YARN-6592.004.patch, YARN-7612-YARN-6592.005.patch, 
> YARN-7612-v2.wip.patch, YARN-7612.wip.patch
>
>
> This introduces a Placement Processor and a Planning algorithm framework to 
> handle placement constraints and scheduling requests from an app and places 
> them on nodes.
> The actual planning algorithm(s) will be handled in a YARN-7613.



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