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https://issues.apache.org/jira/browse/HDFS-2941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13206503#comment-13206503
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Aaron T. Myers commented on HDFS-2941:
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I'm envisioning something like `hdfs dfsadmin -fetchimage <local path>' which
would use the existing GetImageServlet to download the fsimage over HTTP,
saving it at <local path>.
> Add an administrative command to download a copy of the fsimage from the NN
> ---------------------------------------------------------------------------
>
> Key: HDFS-2941
> URL: https://issues.apache.org/jira/browse/HDFS-2941
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: hdfs client, name-node
> Affects Versions: 0.24.0
> Reporter: Aaron T. Myers
> Assignee: Aaron T. Myers
>
> It would be nice to be able to download a copy of the fsimage from the NN,
> e.g. for backup purposes.
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