[YARN-1808] add ability for AM to attach simple state information to containers

• Type: Sub-task
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.4.0
• Component/s: nodemanager
• Assignee: Unassigned
• Reporter: Steve Loughran
• Created: 10/Mar/14 15:14
• Updated: 10/Mar/14 18:46

Description

AM restart could be aided if we could add some state information to the containers themselves. This allows the AM to rebuild its state by querying all of its containers for their status. The AM will of course also need to be able to write this.

This isn't critical: code running in the containers can do the same thing. It just appears to be a common use case