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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2882) Add ExecutionType to denote if a container execution is GUARANTEED or OPPORTUNISTIC
Date Fri, 25 Dec 2015 23:29:49 GMT

    [ https://issues.apache.org/jira/browse/YARN-2882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15071750#comment-15071750
] 

Karthik Kambatla commented on YARN-2882:
----------------------------------------

[~asuresh], [~leftnoteasy] - We should probably move the discussion on whether to expose execution-type
in ResourceRequest to YARN-4335. I would like for us to drive this JIRA to resolution irrespective.

Comments on the latest patch:
# Since we plan to commit this patch to trunk, let us avoid putting yarn-2877 in the branch
name and let Jenkins run it against trunk. 
# ExecutionType: let us mark it @Evolving as well
# yarn_security_token.proto: define a default value for execution type? 
# Looks like there are changes both on NM and RM - did we consider rolling upgrades here?
# ContainerContext - instead of modifying existing methods' arguments, add a new method. That
way, we can avoid changes to ContainerInitializationContext, ContainerTerminationContext and
other dependent changes. I understand we might have to handle initialization and termination
of opportunistic containers differently, but let us add the necessary APIs when we need them.

## Update ContainerInitializationContext and ContainerTerminationContext accordingly. 
# Same for ContainerStatus and ContainerTokenIdentifier

[~kkaranasos] - if you are otherwise caught up (holidays), I am happy to post the patch with
the changes and [~asuresh] could review. 

> 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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