[jira] [Created] (MAPREDUCE-3877) Add a test to formalise the current state transitions of the yarn lifecycle

["Steve Loughran (Created) (JIRA)" <ji...@apache.org>]

Add a test to formalise the current state transitions of the yarn lifecycle
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                 Key: MAPREDUCE-3877
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3877
             Project: Hadoop Map/Reduce
          Issue Type: Test
          Components: mrv2
    Affects Versions: 0.24.0
            Reporter: Steve Loughran
            Assignee: Steve Loughran
            Priority: Minor


Add a test service that counts the number of times it's state methods are called; and can be set to raise an exception on any such entry. Use it to show what the current lifecycle state model is, so that unintentional regressions can be detected. 

It will also act as a foundation for intentional changes to that lifecycle

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