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Date: Tue, 5 Jan 2016 22:00:41 +0000 (UTC)
From: "Wangda Tan (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.12910902.1446772557000.26891.1452031241157@Atlassian.JIRA>
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 <JIRA.12910902.1446772557423@arcas>
Subject: [jira] [Commented] (YARN-4335) Allow ResourceRequests to specify
 ExecutionType of a request ask
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    [ https://issues.apache.org/jira/browse/YARN-4335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15083919#comment-15083919 ] 

Wangda Tan commented on YARN-4335:
----------------------------------

Thanks [~kkaranasos] for updating the patch

bq. Just double-checking: do you mean adding an additional description in the javadoc of the ExecutionType?
Yes

And:
{code}
87	  @Public
88	  @Stable
89	  public static ResourceRequest newInstance(Priority priority, String hostName, ...
{code}
Should be unstable as well.

As [~kasha] [commented|https://issues.apache.org/jira/browse/YARN-1011?focusedCommentId=15076749&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15076749] on YARN-1011:
bq. Given this complication, I would prefer we do not involve AMs in the decision-making process. Based on the need and usecases, we could revisit this at a later time. Note that YARN-4335 adds this to ResourceRequest for distributed scheduling, and even there they are not entirely sure if it needs to be a part.

I'm not sure if there's any tasks of YARN-2877 directly depends on it, It's fine to me to commit this to YARN-2877 branch, but I prefer to hold commit unless any tasks require it.

> Allow ResourceRequests to specify ExecutionType of a request ask
> ----------------------------------------------------------------
>
>                 Key: YARN-4335
>                 URL: https://issues.apache.org/jira/browse/YARN-4335
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager, resourcemanager
>            Reporter: Konstantinos Karanasos
>            Assignee: Konstantinos Karanasos
>         Attachments: YARN-4335-yarn-2877.001.patch, YARN-4335.002.patch
>
>
> YARN-2882 introduced container types that are internal (not user-facing) and are used by the ContainerManager during execution at the NM.
> With this JIRA we are introducing (user-facing) resource request types that are used by the AM to specify the type of the ResourceRequest.
> We will initially support two resource request types: CONSERVATIVE and OPTIMISTIC.
> CONSERVATIVE resource requests will be handed internally to containers of GUARANTEED type, whereas OPTIMISTIC resource requests will be handed to QUEUEABLE containers.


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