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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-955) FSImage.saveFSImage can lose edits
Date Tue, 06 Apr 2010 19:23:33 GMT

    [ https://issues.apache.org/jira/browse/HDFS-955?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12854135#action_12854135
] 

Hudson commented on HDFS-955:
-----------------------------

Integrated in Hadoop-Hdfs-trunk-Commit #231 (See [http://hudson.zones.apache.org/hudson/job/Hadoop-Hdfs-trunk-Commit/231/])
    . New implementation of saveNamespace() to avoid loss of edits when name-node fails during
saving. Contributed by Konstantin Shvachko.


> FSImage.saveFSImage can lose edits
> ----------------------------------
>
>                 Key: HDFS-955
>                 URL: https://issues.apache.org/jira/browse/HDFS-955
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 0.20.1, 0.21.0, 0.22.0
>            Reporter: Todd Lipcon
>            Assignee: Konstantin Shvachko
>            Priority: Blocker
>             Fix For: 0.20.3
>
>         Attachments: FSStateTransition7.htm, hdfs-955-moretests.txt, hdfs-955-unittest.txt,
PurgeEditsBeforeImageSave.patch, saveNamespace-0.20.patch, saveNamespace-0.20.patch, saveNamespace-0.21.patch,
saveNamespace-0.21.patch, saveNamespace.patch, saveNamespace.patch, saveNamespace.patch, saveNamespace.patch,
saveNamespace.txt
>
>
> This is a continuation of a discussion from HDFS-909. The FSImage.saveFSImage function
(implementing dfsadmin -saveNamespace) can corrupt the NN storage such that all current edits
are lost.

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