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https://issues.apache.org/jira/browse/YARN-2882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15072037#comment-15072037
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Karthik Kambatla commented on YARN-2882:
----------------------------------------

Just committed this to trunk. The only uncertain point is with respect to 
exposing ExecutionType in ResourceRequest, which is being tracked at YARN-4335. 

Thanks [~kkaranasos] and [~elgoiri] for working on this, [~asuresh] and 
[~leftnoteasy] for your insights. 



> Add an OPPORTUNISTIC ExecutionType
> ----------------------------------
>
>                 Key: YARN-2882
>                 URL: https://issues.apache.org/jira/browse/YARN-2882
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: nodemanager
>            Reporter: Konstantinos Karanasos
>            Assignee: Konstantinos Karanasos
>         Attachments: YARN-2882-yarn-2877.001.patch, 
> YARN-2882-yarn-2877.002.patch, YARN-2882-yarn-2877.003.patch, 
> YARN-2882-yarn-2877.004.patch, YARN-2882.005.patch, yarn-2882.patch
>
>
> This JIRA introduces the notion of container types.
> We propose two initial types of containers: guaranteed-start and queueable 
> containers.
> Guaranteed-start are the existing containers, which are allocated by the 
> central RM and are instantaneously started, once allocated.
> Queueable is a new type of container, which allows containers to be queued in 
> the NM, thus their execution may be arbitrarily delayed.



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