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https://issues.apache.org/jira/browse/YARN-7654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16382590#comment-16382590
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Eric Badger commented on YARN-7654:
-----------------------------------
bq. Will we eliminate setting the workdir in this model and leave that up to
the image? This has been a complaint I've heard with the bring your own image
model.
Don't we need the workdir to be defined in the image? If not, the container
will write as a user that the NM won't be able to clean up after.
{quote}
The new proposal is to change construct_docker_command as:
exporting all environment and command line arguments to a template that looks
like:
{noformat}
#!/bin/bash
{ { docker run ... -e K=V -e K-V [image-name] } > >(tee stdout.txt ); } \
2> >(tee stderr.txt >&2 )
{noformat}
{quote}
This approach could overwrite variables that are defined by the image. If
variables are in the whitelist, then we want them to be set, but only if they
aren't in the docker image. However, this would always overwrite whatever the
image had defined
> 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
>
> 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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