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https://issues.apache.org/jira/browse/YARN-8927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16660904#comment-16660904
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Wangda Tan commented on YARN-8927:
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[~tangzhankun], thanks for filing the Jira, I encountered the issue before and 
couldn't figure out why. 

It gonna be worthful to add a description to the container-executor.cfg about 
how to use this field. We use it as a self-explaining doc for c-e.cfg.

> Better handling of "docker.trusted.registries" in container-executor's 
> "trusted_image_check" function
> -----------------------------------------------------------------------------------------------------
>
>                 Key: YARN-8927
>                 URL: https://issues.apache.org/jira/browse/YARN-8927
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Zhankun Tang
>            Assignee: Zhankun Tang
>            Priority: Major
>
> There are some missing cases that we need to catch when handling 
> "docker.trusted.registries".
> The container-executor.cfg configuration is as follows:
> {code:java}
> docker.trusted.registries=tangzhankun,ubuntu,centos{code}
> It works if run DistrubutedShell with "tangzhankun/tensorflow"
> {code:java}
> "yarn ... -shell_env YARN_CONTAINER_RUNTIME_TYPE=docker -shell_env 
> YARN_CONTAINER_RUNTIME_DOCKER_IMAGE=tangzhankun/tensorflow
> {code}
> But run a DistrubutedShell job with "centos", "centos[:tagName]", "ubuntu" 
> and "ubuntu[:tagName]" fails:
> The error message is like:
> {code:java}
> "image: centos is not trusted"
> {code}
> We need better handling the above cases.



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