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https://issues.apache.org/jira/browse/YARN-7654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16469823#comment-16469823
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Eric Yang commented on YARN-7654:
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[~jlowe] Thank you for the review, the styling improvement will be addressed.
{quote}
DockerClient is creating the environment file in /tmp which has the same
leaking problem we had with the docker .cmd files.
{quote}
The patch writes .env file in the same nmPrivate directory as .cmd file. It
doesn't write to /tmp.
{quote}
The code is now writing "Launching docker container..." etc. even when not
using the entry point. Are these smashed by the container_launch.sh script when
not using the entry point? If not it could be an issue since it's changing what
the user's code is writing to those files today.{quote}
Yes, these lines are overwritten by container_launch.sh for non entry_point
mode. It doesn't break existing compatibility.
> Support ENTRY_POINT for docker container
> ----------------------------------------
>
> Key: YARN-7654
> URL: https://issues.apache.org/jira/browse/YARN-7654
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: yarn
> Affects Versions: 3.1.0
> Reporter: Eric Yang
> Assignee: Eric Yang
> Priority: Blocker
> Labels: Docker
> Attachments: YARN-7654.001.patch, YARN-7654.002.patch,
> YARN-7654.003.patch, YARN-7654.004.patch, YARN-7654.005.patch,
> YARN-7654.006.patch, YARN-7654.007.patch, YARN-7654.008.patch,
> YARN-7654.009.patch, YARN-7654.010.patch, YARN-7654.011.patch,
> YARN-7654.012.patch, YARN-7654.013.patch, YARN-7654.014.patch,
> YARN-7654.015.patch, YARN-7654.016.patch, YARN-7654.017.patch,
> YARN-7654.018.patch, YARN-7654.019.patch, YARN-7654.020.patch,
> YARN-7654.021.patch
>
>
> Docker image may have ENTRY_POINT predefined, but this is not supported in
> the current implementation. It would be nice if we can detect existence of
> {{launch_command}} and base on this variable launch docker container in
> different ways:
> h3. Launch command exists
> {code}
> docker run [image]:[version]
> docker exec [container_id] [launch_command]
> {code}
> h3. Use ENTRY_POINT
> {code}
> docker run [image]:[version]
> {code}
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