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https://issues.apache.org/jira/browse/YARN-804?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran resolved YARN-804.
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    Resolution: Won't Fix

I don't think we can fix this while mocking is used to test some aspects of the 
implementation classes...WONTFIX unless there's a workaround

> mark AbstractService init/start/stop methods as final
> -----------------------------------------------------
>
>                 Key: YARN-804
>                 URL: https://issues.apache.org/jira/browse/YARN-804
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: api
>    Affects Versions: 2.1.0-beta
>            Reporter: Steve Loughran
>            Assignee: Vinod Kumar Vavilapalli
>         Attachments: YARN-804-001.patch
>
>
> Now that YARN-117 and MAPREDUCE-5298 are checked in, we can mark the public 
> AbstractService init/start/stop methods as final.
> Why? It puts the lifecycle check and error handling around the subclass code, 
> ensuring no lifecycle method gets called in the wrong state or gets called 
> more than once.When a {{serviceInit(), serviceStart()  & serviceStop()}} 
> method throws an exception, it's caught and auto-triggers stop. 
> Marking the methods as final forces service implementations to move to the 
> stricter lifecycle. It has one side effect: some of the mocking tests play up 
> -I'll need some assistance here



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