[YARN-7240] Add more states and transitions to stabilize the NM Container state machine

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.9.0, 3.0.0
• Target Version/s: 2.9.0, 3.0.0-beta1
• Assignee: kartheek muthyala
• Reporter: Arun Suresh
• Created: 21/Sep/17 21:54
• Updated: 31/Oct/17 21:42
• Resolved: 25/Sep/17 23:39

Description

There seem to be a few intermediate states that can be added to improve the stability of the NM container state machine.

For. eg:

• The REINITIALIZING should probably be split into REINITIALIZING and REINITIALIZING_AWAITING_KILL.
• Container updates are currently handled in the ContainerScheduler, but it would probably be better to have it plumbed through the container state machine as a new state, say UPDATING and a new container event.

The plan is to add some extra tests too to try and test every transition.