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https://issues.apache.org/jira/browse/HDFS-2802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13481853#comment-13481853
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Suresh Srinivas commented on HDFS-2802:
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bq. Great, I'm glad you agree.
I have agreed many times :-)
[here|https://issues.apache.org/jira/browse/HDFS-2802?focusedCommentId=13480547&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13480547]
and
[here|https://issues.apache.org/jira/browse/HDFS-2802?focusedCommentId=13481632&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13481632].
I am happy to get beyond that issue :-) Thanks for the offer to help. I think
for now we are on a path to get it done very soon.
bq. To be completely clear, if it makes sense to implement a copying solution
as an interim development stage
Sounds good. I misunderstood you to be saying opposite of that
[here|https://issues.apache.org/jira/browse/HDFS-2802?focusedCommentId=13481682&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13481682]
bq. I don't think that a solution which copies all of the files/directories
that are being snapshotted should be merged to trunk.
I disagree. But we may just end up doing optimization prior to merge.
> 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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