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https://issues.apache.org/jira/browse/HDFS-7416?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Haohui Mai resolved HDFS-7416.
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    Resolution: Fixed

The desired code refactoring has completed. Closing this jira.

Thanks everyone for the work!

> Revisit the abstraction between NameNodeRpcServer, FSNameSystem and 
> FSDirectory
> -------------------------------------------------------------------------------
>
>                 Key: HDFS-7416
>                 URL: https://issues.apache.org/jira/browse/HDFS-7416
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Haohui Mai
>            Assignee: Haohui Mai
>
> {{NameNodeRpcServer}}, {{FSNameSystem}} and {{FSDirectory}} implement the 
> namespace of the NN. In the current implementation the boundary of these 
> classes are not fully clear.
> This jira tracks the efforts of clarifying the boundaries between these three 
> classes so that they can be more easily maintained in the long term.



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