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From "Sanjay Radia (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5324) Make Namespace implementation pluggable in the namenode
Date Sat, 19 Oct 2013 22:48:44 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13800022#comment-13800022
] 

Sanjay Radia commented on HDFS-5324:
------------------------------------

Lin, a summer intern at Hortonworks, prototyped a NN that stores only the working set in memory
(HDFS-5389). She made changes directly to NN code. 

> 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
>
>
> 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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