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https://issues.apache.org/jira/browse/HDFS-233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13165901#comment-13165901
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dhruba borthakur commented on HDFS-233:
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Hi Matt, without a design approval, the work to upload this feature merged with
apache hdfs trunk might go waste. We currently have the code at githib, a major
chunk of it contributed by an intern Usman Masoud.
https://github.com/facebook/hadoop-20/tree/master/src/contrib/snapshot/
> Support for snapshots
> ---------------------
>
> Key: HDFS-233
> URL: https://issues.apache.org/jira/browse/HDFS-233
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: dhruba borthakur
> Assignee: dhruba borthakur
> Attachments: Snapshots.pdf, Snapshots.pdf
>
>
> Support HDFS snapshots. It should support creating snapshots without shutting
> down the file system. Snapshot creation should be lightweight and a typical
> system should be able to support a few thousands concurrent snapshots. There
> should be a way to surface (i.e. mount) a few of these snapshots
> simultaneously.
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