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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5620) Core changes in NodeManager to support for upgrade and rollback of Containers
Date Wed, 07 Sep 2016 22:54:21 GMT

    [ https://issues.apache.org/jira/browse/YARN-5620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15472054#comment-15472054
] 

Wangda Tan commented on YARN-5620:
----------------------------------

[~asuresh],

I still think two APIs should be merged.

In YARN-5221, it update properties of container in RM, like resource / execution-type
So I think we should have a symmetric API in NM to update properties of container in NM. 

To me, localized resource, resource, execution type, any fields in ContainerLaunchContext
are all properties of a container in NM, we should be able to use a unified API to update
them.

And should we expose a rollback API to application? 

> Core changes in NodeManager to support for upgrade and rollback of Containers
> -----------------------------------------------------------------------------
>
>                 Key: YARN-5620
>                 URL: https://issues.apache.org/jira/browse/YARN-5620
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Arun Suresh
>            Assignee: Arun Suresh
>         Attachments: YARN-5620.001.patch, YARN-5620.002.patch, YARN-5620.003.patch
>
>
> JIRA proposes to modify the ContainerManager (and other core classes) to support upgrade
of a running container with a new {{ContainerLaunchContext}} as well as the ability to rollback
the upgrade if the container is not able to restart using the new launch Context. 



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