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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1557) Separate Storage from FSImage
Date Fri, 28 Jan 2011 20:16:45 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12988211#action_12988211

Todd Lipcon commented on HDFS-1557:

Hey Ivan. Now that Suresh and Jitendra have taken a look, I'd like to take a quick look too
at the final version - can you give me the weekend to review before committing? Thanks.

> Separate Storage from FSImage
> -----------------------------
>                 Key: HDFS-1557
>                 URL: https://issues.apache.org/jira/browse/HDFS-1557
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: name-node
>    Affects Versions: 0.21.0
>            Reporter: Ivan Kelly
>            Assignee: Ivan Kelly
>             Fix For: 0.23.0
>         Attachments: HDFS-1557-branch-0.22.diff, HDFS-1557-branch-0.22.diff, HDFS-1557-trunk.diff,
HDFS-1557-trunk.diff, HDFS-1557-trunk.diff, HDFS-1557.diff, HDFS-1557.diff, HDFS-1557.diff,
HDFS-1557.diff, HDFS-1557.diff, HDFS-1557.diff
> FSImage currently derives from Storage and FSEditLog has to call methods directly on
FSImage to access the filesystem. This JIRA is to separate the Storage class out into NNStorage
so that FSEditLog is less dependent on FSImage. From this point, the other parts of the circular
dependency should be easy to fix.

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