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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1881) Federation: after taking snapshot the current directory of datanode is empty
Date Tue, 17 May 2011 17:14:47 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1881?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13034894#comment-13034894
] 

Hudson commented on HDFS-1881:
------------------------------

Integrated in Hadoop-Hdfs-trunk-Commit #660 (See [https://builds.apache.org/hudson/job/Hadoop-Hdfs-trunk-Commit/660/])
    HDFS-1881. Federation: after taking snapshot the current directory of datanode is empty.
Contributed by Tanping Wang.


> Federation: after taking snapshot the current directory of datanode is empty
> ----------------------------------------------------------------------------
>
>                 Key: HDFS-1881
>                 URL: https://issues.apache.org/jira/browse/HDFS-1881
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node
>    Affects Versions: 0.23.0
>            Reporter: Tanping Wang
>            Assignee: Tanping Wang
>             Fix For: 0.23.0
>
>         Attachments: HDFS-1881.2.patch, HDFS-1881.patch
>
>
> After taking a snapshot in Federation (by starting up namenode with option -upgrade),
it appears that the current directory of data node does not contain the block files.  We have
also verified that upgrading from 20 to Federation does not have this problem.

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