Steve Loughran created YARN-1808:
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             Summary: add ability for AM to attach simple state information to 
containers
                 Key: YARN-1808
                 URL: https://issues.apache.org/jira/browse/YARN-1808
             Project: Hadoop YARN
          Issue Type: Sub-task
          Components: nodemanager
    Affects Versions: 2.4.0
            Reporter: Steve Loughran
            Priority: Minor


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



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