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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1557) Separate Storage from FSImage
Date Tue, 18 Jan 2011 18:44:46 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12983319#action_12983319
] 

Todd Lipcon commented on HDFS-1557:
-----------------------------------

Hi Ivan. FYi TestConcurrentFileReader is definitely flaky on trunk these days.

> 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
>
>
> 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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