Shane Kumpf created YARN-7916:
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Summary: Remove call to docker logs on failure in
container-executor
Key: YARN-7916
URL: https://issues.apache.org/jira/browse/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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