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From "Sameer Paranjpye (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-334) Redesign the dfs namespace datastructures to be copy on write
Date Mon, 06 Nov 2006 23:23:38 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-334?page=comments#action_12447580 ] 
Sameer Paranjpye commented on HADOOP-334:

Correction, in the above comment, transaction 'x' would be handled as:

x: the image does not have directory /a, root has timestamp t3 >= t0, move on

> Redesign the dfs namespace datastructures to be copy on write
> -------------------------------------------------------------
>                 Key: HADOOP-334
>                 URL: http://issues.apache.org/jira/browse/HADOOP-334
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: dfs
>    Affects Versions: 0.4.0
>            Reporter: Owen O'Malley
>         Assigned To: Konstantin Shvachko
> The namespace datastructures should be copy on write so that the namespace does not need
to be completely locked down from user changes while the checkpoint is being made.

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