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https://issues.apache.org/jira/browse/HDFS-233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12883633#action_12883633
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dhruba borthakur commented on HDFS-233:
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There hasn't been much work in this direction. It was deemed complex to
implement because it needs lots of changes to the current NameNode/DataNode
code. I have a proposal in mind that can implement "HDFS snapshots" as a layer
on top of the current HDFS code with negligible changes to the existing
NameNode/DataNode architecture.
If you have any ideas regarding this , or is willing to contribute towards this
effort, that will be great! Thanks.
> 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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