Chen He commented on YARN-3289:

Or, maybe, we add some module on NM that can automatically pull deltas from 
registry. User can configure the frequency and schedule.

> Docker images should be downloaded during localization
> ------------------------------------------------------
>                 Key: YARN-3289
>                 URL: https://issues.apache.org/jira/browse/YARN-3289
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Ravi Prakash
> We currently call docker run on images while launching containers. If the 
> image size if sufficiently big, the task will timeout. We should download the 
> image we want to run during localization (if possible) to prevent this

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