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From "Jitendra Nath Pandey (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1557) Separate Storage from FSImage
Date Wed, 02 Feb 2011 01:57:29 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12989495#comment-12989495
] 

Jitendra Nath Pandey commented on HDFS-1557:
--------------------------------------------

The three failed tests and test-contrib also fail without the patch. Release audit warnings
are due to OfflineImageViewer and are unrelated to this patch.

> 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: 1557-suggestions.txt, 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, 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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