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From "Tsz Wo (Nicholas), SZE (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-2223) Untangle depencencies between NN components
Date Mon, 27 Feb 2012 20:16:47 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2223?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo (Nicholas), SZE updated HDFS-2223:
-----------------------------------------

    Fix Version/s: 0.23.3

I have merged this to 0.23.
                
> Untangle depencencies between NN components
> -------------------------------------------
>
>                 Key: HDFS-2223
>                 URL: https://issues.apache.org/jira/browse/HDFS-2223
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>    Affects Versions: 0.23.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: 0.24.0, 0.23.3
>
>         Attachments: hdfs-2223-1.txt, hdfs-2223-10.txt, hdfs-2223-2.txt, hdfs-2223-3.txt,
hdfs-2223-4.txt, hdfs-2223-5.txt, hdfs-2223-6.txt, hdfs-2223-7.txt, hdfs-2223-8.txt, hdfs-2223-9.txt
>
>
> Working in the NN a lot for HA (HDFS-1623) I've come across a number of situations where
the tangled dependencies between NN components has been problematic for adding new features
and for testability. It would be good to untangle some of these and clarify what the distinction
is between the different components: NameNode, FSNamesystem, FSDirectory, FSImage, NNStorage,
and FSEditLog

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