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From "Aaron T. Myers (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-2941) Add an administrative command to download a copy of the fsimage from the NN
Date Sat, 24 Mar 2012 00:51:25 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2941?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aaron T. Myers updated HDFS-2941:
---------------------------------

    Attachment: HDFS-2941.patch

Here's a patch which addresses the issue. In the course of implementing this patch, I also
noticed that the help text for setBalancerBandwidth in dfsadmin was inadvertently left out
in one place. I've taken the liberty of adding that back in this patch.

In addition to the above automated tests, I also tested this change manually with HA enabled,
by alternately getting the fsimage with each NN active.
                
> 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
>         Attachments: HDFS-2941.patch
>
>
> 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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