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https://issues.apache.org/jira/browse/YARN-2882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15071759#comment-15071759
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Karthik Kambatla commented on YARN-2882:
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bq. Only the RM can approve the promotion of an OPPORTUNISTIC container to a
GUARANTEED container.
Filed YARN-4509 to follow up on the promotion protocol.
> Add ExecutionType to denote if a container execution is GUARANTEED or
> OPPORTUNISTIC
> -----------------------------------------------------------------------------------
>
> 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.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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