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https://issues.apache.org/jira/browse/YARN-3324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14385158#comment-14385158
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Chen He commented on YARN-3324:
-------------------------------
{quote}1. There will be overhead of downloading the image every time the test
is run if we delete the image after running tests.{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}so there will be no issue of accumulation of multiple test images.{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.
> 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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