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https://issues.apache.org/jira/browse/MAPREDUCE-4015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13230288#comment-13230288
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Steve Loughran commented on MAPREDUCE-4015:
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this should be a new exception, say {{YarnIllegalLifecycleException}} that
includes a ref to the service at fault and expected state. This will aid in
testing -a human readable string can also be generated from this.
> Yarn services to throw a YarnException on invalid state changs
> --------------------------------------------------------------
>
> Key: MAPREDUCE-4015
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4015
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Components: mrv2
> Affects Versions: 0.23.1, 0.24.0
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Minor
> Original Estimate: 0.5h
> Remaining Estimate: 0.5h
>
> the {{EnsureCurrentState()}} checks of services throw an
> {{IllegalStateException}} if the state is wrong. If this was changed to
> {{YarnException}}. wrapper services such as CompositeService could relay this
> direct, instead of wrapping it in their own.
> Time to implement mainly in changing the lifecycle test cases of
> MAPREDUCE-3939 subtasks.
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