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https://issues.apache.org/jira/browse/YARN-3324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14385160#comment-14385160
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Ravindra Kumar Naik commented on YARN-3324:
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{quote}The overhead of downloading the image every time can be neglected if we
have private docker registry in LAN. It could be a problem if thousands of
machine pull image from a single registry at the same time.{quote}
Agreed
{quote}If we do not delete downloaded images after test, to avoid images
accumulation, we should guarantee docker image related tests only use limited
types of images.{quote}
The tests currently use a single type of image. May be we can write a note in
the tests so anyone who modifies the test in future takes a note to revisit
this issue if more images are used in test
> TestDockerContainerExecutor should clean test docker image from local
> repository after test is done
> ---------------------------------------------------------------------------------------------------
>
> Key: YARN-3324
> URL: https://issues.apache.org/jira/browse/YARN-3324
> Project: Hadoop YARN
> Issue Type: Sub-task
> Affects Versions: 2.6.0
> Reporter: Chen He
> Attachments: YARN-3324-branch-2.6.0.002.patch,
> YARN-3324-trunk.002.patch
>
>
> Current TestDockerContainerExecutor only cleans the temp directory in local
> file system but leaves the test docker image in local docker repository. It
> should be cleaned.
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