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https://issues.apache.org/jira/browse/MAPREDUCE-729?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12729308#action_12729308
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Arun C Murthy commented on MAPREDUCE-729:
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bq. Indeed to allow better refactoring, we could even consider more finer
grained interfaces which are all extended by MapReduceMaster, which JobTracker
implements. I suppose that will make it even more useful to write true unit
tests in hadoop. Thoughts ?
Hemanth, do you have any specific use-cases/suggestions?
> Create a MapReduceMaster interface for the JobTracker
> -----------------------------------------------------
>
> Key: MAPREDUCE-729
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-729
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: jobtracker
> Reporter: Arun C Murthy
> Assignee: Arun C Murthy
> Fix For: 0.21.0
>
>
> It would be useful to have a 'master' interface which specifies all the
> interfaces exposed by the JobTracker to allow for mock-objects, simulation
> (MAPREDUCE-728) etc.
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