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From "Konstantinos Karanasos (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5180) Add ensureExecutionType boolean flag in ResourceRequest
Date Thu, 02 Jun 2016 00:07:59 GMT

    [ https://issues.apache.org/jira/browse/YARN-5180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15311420#comment-15311420
] 

Konstantinos Karanasos commented on YARN-5180:
----------------------------------------------

Regarding the flag, my rationale was more like "if the user does not specify neither the execution
type nor the flag, we should give him the default YARN experience, which is only guaranteed
containers".
If the user does specify the execution type, it's fine by default to set the flag to false.
However, the problem with the above, like [~kasha] said, is that we will have to rewrite all
AMs to be able to use over-subscription and/or queuing at the NMs, so maybe it's indeed better
to keep it us is...

> Add ensureExecutionType boolean flag in ResourceRequest
> -------------------------------------------------------
>
>                 Key: YARN-5180
>                 URL: https://issues.apache.org/jira/browse/YARN-5180
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Arun Suresh
>            Assignee: Arun Suresh
>         Attachments: YARN-5180.001.patch, YARN-5180.002.patch, YARN-5180.003.patch, YARN-5180.004.patch,
YARN-5180.005.patch
>
>
> YARN-2882 introduced the concept of *ExecutionTypes*.
> YARN-4335 allowed AMs to specify the ExecutionType in the ResourceRequest.
> This JIRA proposes to add a boolean flag to the ResourceRequest to signal to the Scheduler
that the AM is fine receiving a Container with a different Execution type than what is asked.



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