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https://issues.apache.org/jira/browse/MAPREDUCE-1001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12906079#action_12906079
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Hong Tang commented on MAPREDUCE-1001:
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+1 for fixing it!
> Reducing code duplication in Mumak
> ----------------------------------
>
> Key: MAPREDUCE-1001
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1001
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Hong Tang
>
> The first release of Mumak (MAPREDUCE-728) introduces some coupling between
> the core mapred code with Mumak code. Specifically, New constructors are
> added to JobTracker and JobInProgress to allow simulator to subclass and
> alter JT/JIP behavior. This could be a code maintenance overhead when new
> changes have to be ported to either the added constructors or the simulation
> subclasses.
> It would be nice to refactor the constructors of JobTracker and JobInProgress
> to avoid as much code duplication as possible.
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