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https://issues.apache.org/jira/browse/MAPREDUCE-2826?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eli Collins moved HADOOP-3801 to MAPREDUCE-2826:
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Key: MAPREDUCE-2826 (was: HADOOP-3801)
Project: Hadoop Map/Reduce (was: Hadoop Common)
> Change the job state observer classes to interfaces
> ---------------------------------------------------
>
> Key: MAPREDUCE-2826
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2826
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Reporter: Owen O'Malley
> Assignee: Vivek Ratan
>
> Schedulers will most often want to be the observers of the job state events
> in a single class. Therefore, I think they should be interfaces which can
> have multiple inheritance.
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