[YARN-8805] Automatically convert the launch command to the exec form when using entrypoint support

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.3.0
• Labels: Docker
• Assignee: Eric Yang Assign to me
• Reporter: Shane Kumpf
• Created: 20/Sep/18 12:33
• Updated: 11/Mar/19 18:01
• Resolved: 11/Mar/19 18:01

Description

When YARN_CONTAINER_RUNTIME_DOCKER_RUN_OVERRIDE_DISABLE is true, and a launch command is provided, it is expected that the launch command is provided by the user in exec form.

For example:

"/usr/bin/sleep 6000"

must be changed to:

"/usr/bin/sleep,6000"

If this is not done, the container will never start and will be in a Created state. We should automatically do this conversion vs making the user understand this nuance of using the entrypoint support. Docs should be updated to reflect this change.