[jira] [Commented] (YARN-7421) Preserve execution type for containers to be increased by AM post YARN-1015

["Haibo Chen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-7421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16227299#comment-16227299 ] 

Haibo Chen commented on YARN-7421:
----------------------------------

Looks like ResourceRequests for container increase/promotion are always set to GUARANTEED and
enforceExecutionType to true in ContainerUpdateContext. createResourceReqForIncrease(). This may
not a an issue.

> Preserve execution type for containers to be increased by AM post YARN-1015
> ---------------------------------------------------------------------------
>
>                 Key: YARN-7421
>                 URL: https://issues.apache.org/jira/browse/YARN-7421
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>    Affects Versions: YARN-1011
>            Reporter: Haibo Chen
>            Assignee: Haibo Chen
>
> From offline discussion with [~asuresh], if an AM tries to promote or increase a container whose enforceExecutionType is set to false, the scheduler may, in the presence of oversubscription,  allocate an OPPORTUNISTIC container. This should not happen given the contract we have in container update API. 



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