Shane Kumpf created YARN-7916:

             Summary: Remove call to docker logs on failure in 
                 Key: YARN-7916
             Project: Hadoop YARN
          Issue Type: Sub-task
            Reporter: Shane Kumpf

If a Docker container fails with a non-zero exit code, container-executor 
attempts to run a {{docker logs --tail=250 container_name}} to provide more 
details on why the container failed. While the idea is good, the current 
implementation will fail for most containers as they are leveraging a launch 
script whose output will be redirected to a file. The {{--tail}} option throws 
an error if no log output is available for the container, resulting in the 
docker logs command returning rc=1 in most cases.

I propose we remove this code from container-executor. Alternative approaches 
to handle logging can be explored as part of supporting an image's entrypoint.

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