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From "Daniel Templeton (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3854) Add localization support for docker images
Date Wed, 20 Jul 2016 19:59:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-3854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15386516#comment-15386516
] 

Daniel Templeton commented on YARN-3854:
----------------------------------------

bq.  Today, when the docker run in container executor is issued, a docker pull is run behind
the scenes, similar to what you are suggesting.

As I understand it, the pull is implicit in the run when the image is not already present.
 The problem as I understand it is that the container can appear to be stalled because of
a slow image download.  What I was suggesting was making the pull explicit and to drive it
from the localization framework.  When the pull is complete, then the container can be launched.

> Add localization support for docker images
> ------------------------------------------
>
>                 Key: YARN-3854
>                 URL: https://issues.apache.org/jira/browse/YARN-3854
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: yarn
>            Reporter: Sidharta Seethana
>            Assignee: Zhankun Tang
>         Attachments: YARN-3854-branch-2.8.001.patch, YARN-3854_Localization_support_for_Docker_image_v1.pdf,
YARN-3854_Localization_support_for_Docker_image_v2.pdf
>
>
> We need the ability to localize images from HDFS and load them for use when launching
docker containers. 



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