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From "Varun Vasudev (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5620) Core changes in NodeManager to support re-initialization of Containers with new launchContext
Date Thu, 15 Sep 2016 10:11:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-5620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15492925#comment-15492925

Varun Vasudev commented on YARN-5620:

Thanks for the patch [~asuresh]. +1 except for some minor comment fixes.

+   * Resource is localized while the container is running - create symlinks.

Comment is the same for two transition handlers - maybe change slightly to provide more context?

+      // If Container died during an upgrade, dont bother retrying.
What is this comment for? There’s no change in the code and it looks we're just going through
the regular retry mechanism.

+  static class KilledExternallyForReInitTransition extends ContainerTransition {
Maybe this should be renamed? My understanding is that this really is “Killed by YARN framework
to restart container"

> Core changes in NodeManager to support re-initialization of Containers with new launchContext
> ---------------------------------------------------------------------------------------------
>                 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, YARN-5620.004.patch,
YARN-5620.005.patch, YARN-5620.006.patch, YARN-5620.007.patch, YARN-5620.008.patch, YARN-5620.009.patch,
YARN-5620.010.patch, YARN-5620.011.patch, YARN-5620.012.patch, YARN-5620.013.patch, YARN-5620.014.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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