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From "Milind Bhandarkar (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5324) Make Namespace implementation pluggable in the namenode
Date Wed, 15 Jan 2014 19:36:33 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5324?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Milind Bhandarkar updated HDFS-5324:
------------------------------------

    Attachment: Checklist Of Changes.docx

This document lists all the changes to existing trunk code to introduce AbstractNameSystem,
which can be overridden (& new concrete class specified via configuration variable) to
make namespace pluggable.

> Make Namespace implementation pluggable in the namenode
> -------------------------------------------------------
>
>                 Key: HDFS-5324
>                 URL: https://issues.apache.org/jira/browse/HDFS-5324
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: 2.1.1-beta
>         Environment: All
>            Reporter: Milind Bhandarkar
>            Assignee: Milind Bhandarkar
>             Fix For: 3.0.0
>
>         Attachments: AbstractNamesystem.java, Checklist Of Changes.docx
>
>
> For the last couple of months, we have been working on making Namespace
> implementation in the namenode pluggable. We have demonstrated that it can
> be done without major surgery on the namenode, and does not have noticeable
> performance impact. We would like to contribute it back to Apache HDFS.



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