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https://issues.apache.org/jira/browse/HDFS-2802?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz Wo (Nicholas), SZE updated HDFS-2802:
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Attachment: Snapshots20121018.pdf
>From the last time the patch is posted for the prototype, I have been
>continuing work on the code. The attachment (Snapshots20121018.pdf) is the
>updated design document based on currently where the implementation is. It is
>still fairly highlevel, but should has enough details to give an idea on how
>the snapshot feature is being implemented. I will continue to update the
>design as the implementation progresses.
Here are some of the next steps:
# Split the large patch and create subtasks in this jira, to make it easy to
understand the implementation.
# Will schedule a design review meeting to go over the requirements and design
in detail with the folks who are interested. Especially to get feedback from
other Hadoop projects. This meeting will be in the week of Oct 29, post Hadoop
World.
> Support for RW/RO snapshots in HDFS
> -----------------------------------
>
> Key: HDFS-2802
> URL: https://issues.apache.org/jira/browse/HDFS-2802
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: data-node, name-node
> Reporter: Hari Mankude
> Assignee: Hari Mankude
> Attachments: snap.patch, snapshot-one-pager.pdf, Snapshots20121018.pdf
>
>
> Snapshots are point in time images of parts of the filesystem or the entire
> filesystem. Snapshots can be a read-only or a read-write point in time copy
> of the filesystem. There are several use cases for snapshots in HDFS. I will
> post a detailed write-up soon with with more information.
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