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https://issues.apache.org/jira/browse/HDFS-1881?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13037332#comment-13037332
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Hudson commented on HDFS-1881:
------------------------------
Integrated in Hadoop-Hdfs-trunk #673 (See
[https://builds.apache.org/hudson/job/Hadoop-Hdfs-trunk/673/])
> 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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