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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2802) Support for RW/RO snapshots in HDFS
Date Fri, 10 May 2013 22:21:25 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13654932#comment-13654932

Jing Zhao commented on HDFS-2802:

bq. What are your thoughts on the timeline for this? I've been assuming that we'd wait at
least a few weeks for the snapshots work to soak in trunk a bit before back-porting to branch-2
as we've done in the past with other large features like this.

The timeline would be based on some of the discussions in dev threads. We would like to get
this done ASAP. In the meanwhile, we will be doing extensive tests and run the test plan (attached
in this jira) along with more QA validation. This will take some time.
> 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: datanode, namenode
>            Reporter: Hari Mankude
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: 2802.diff, 2802.patch, 2802.patch, h2802_20130417.patch, h2802_20130422.patch,
h2802_20130423.patch, h2802_20130425.patch, h2802_20130426.patch, h2802_20130430b.patch, h2802_20130430.patch,
h2802_20130508.patch, h2802_20130509.patch, HDFS-2802.20121101.patch, HDFS-2802.branch-2.0510.patch,
HDFS-2802-meeting-minutes-121101.txt, HDFSSnapshotsDesign.pdf, snap.patch, snapshot-design.pdf,
snapshot-design.tex, snapshot-one-pager.pdf, Snapshots20120429.pdf, Snapshots20121018.pdf,
Snapshots20121030.pdf, Snapshots.pdf, snapshot-testplan.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

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