[YARN-2331] Distinguish shutdown during supervision vs. shutdown for rolling upgrade

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.6.0
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: nodemanager
• Labels: BB2015-05-RFC
• Target Version/s: 2.6.0
• Assignee: Jason Darrell Lowe
• Reporter: Jason Darrell Lowe
• Created: 22/Jul/14 14:32
• Updated: 15/Nov/17 19:12
• Resolved: 08/May/15 22:12

Description

When the NM is shutting down with restart support enabled there are scenarios we'd like to distinguish and behave accordingly:

1. The NM is running under supervision. In that case containers should be preserved so the automatic restart can recover them.
2. The NM is not running under supervision and a rolling upgrade is not being performed. In that case the shutdown should kill all containers since it is unlikely the NM will be restarted in a timely manner to recover them.
3. The NM is not running under supervision and a rolling upgrade is being performed. In that case the shutdown should not kill all containers since a restart is imminent due to the rolling upgrade and the containers will be recovered.