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https://issues.apache.org/jira/browse/YARN-9184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16762236#comment-16762236
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Eric Yang commented on YARN-9184:
---------------------------------
In today's docker meeting, [~ebadger], [[email protected]],
[~billie.rinaldi] and [~Jim_Brennan] were present in the meeting. We have some
ideas to ensure latest image is consistent within a job. One of the ideas to
keep :latest tag consistent for a job, is to use docker image command to figure
out the image id and use image id to propagate to rest of the container
requests. There are some challenges to overcome.
# The latest tag does not exist on the node where first container starts. The
first container will need to download the latest image, and find image ID.
This can introduce lag time for other containers to start.
# If image id is used to start other container, container-executor may have
problems to check if the image is coming from a trusted source. Both image
name and ID must be supply through .cmd file to container-executor. However,
hacker can supply incorrect image id and defeat container-executor security
checks.
If we can over come those challenges, it will be possible to allow this option
to be job specific. Job specific image consistency can be a separate JIRA from
the current work.
I think Mockito update in HADOOP-14178 may have broken this patch. The patch
doesn't compile anymore. [~uranus] could you take a look? Thanks
> Docker run doesn't pull down latest image if the image exists locally
> ----------------------------------------------------------------------
>
> Key: YARN-9184
> URL: https://issues.apache.org/jira/browse/YARN-9184
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: nodemanager
> Affects Versions: 3.1.0, 3.0.3
> Reporter: Zhaohui Xin
> Assignee: Zhaohui Xin
> Priority: Major
> Attachments: YARN-9184.001.patch, YARN-9184.002.patch,
> YARN-9184.003.patch, YARN-9184.004.patch
>
>
> See [docker run doesn't pull down latest image if the image exists
> locally|https://github.com/moby/moby/issues/13331].
> So, I think we should pull image before run to make image always latest.
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