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HDFS >> mail # dev >> [VOTE] Merge HDFS-2802 snapshot feature to trunk


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Re: [VOTE] Merge HDFS-2802 snapshot feature to trunk
Aaron, I have created HDFS-4808 to discuss the API issues you brought up. I
agree that this needs to be resolved before merging the code to branch-2.
Thanks for voting.
On Tue, May 7, 2013 at 5:29 PM, Aaron T. Myers <[EMAIL PROTECTED]> wrote:

> I'm +1 as well on merging this branch to trunk. I've thoroughly
> reviewed/discussed the design and have personally reviewed much of the code
> as well. Good stuff.
>
> I would have preferred to wrap up the discussion regarding which API should
> include the snapshot create/delete operations before the merge, but I don't
> think that should hold up the merge to trunk. No reason we can't discuss it
> afterward, though I'd really like to come to a conclusion about that before
> we merge it to branch-2. Suresh, I believe the last action on that thread
> was you asking Nicholas to move the discussion to a JIRA, but I don't think
> that JIRA ever got filed. Mind doing that?
>
>
> --
> Aaron T. Myers
> Software Engineer, Cloudera
>
>
> On Wed, May 1, 2013 at 11:54 AM, Suresh Srinivas <[EMAIL PROTECTED]
> >wrote:
>
> > This is a follow up to my earlier heads up about merging Snapshot feature
> > to trunk - http://markmail.org/message/ixkyku2cebkewnzy. I am happy to
> > announce that we have completed the development of the feature. It is
> ready
> > to be merged into trunk.
> >
> > Development of snapshot feature is tracked in the jira
> > https://issues.apache.org/jira/browse/HDFS-2802. This is an important
> > feature for HDFS. Please see a brief presentation that describes the
> > feature at a highlevel from the Snapshot discussion meetup we had a while
> > back -
> > https://issues.apache.org/jira/secure/attachment/12552861/Snapshots.pdf.
> >
> >
> > Details of development and testing:
> > Development has been done in a separate branch -
> > https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2802. The
> > updated design is posted at -
> >
> >
> https://issues.apache.org/jira/secure/attachment/12581376/Snapshots20120429.pdf
> > .
> > The feature development has involved close to 120 subtasks and close to
> 25K
> > lines of code.
> >
> > A lot of unit tests have been added as a part of the feature. We also
> have
> > been testing this in a cluster of 5 nodes with a long running test that
> > mimics a real cluster usage with emphasis on use cases related to
> snapshot.
> >  We are also testing non-snapshot code path running tests on a separate
> > cluster without configuring snapshot. Please see the test plan
> >
> >
> https://issues.apache.org/jira/secure/attachment/12575442/snapshot-testplan.pdf
> > for
> > the details. Once the feature is merged into trunk, we will continue to
> > test and fix any bugs that may be found on the trunk.
> >
> > This feature is a result of many people's collaboration. The bulk of the
> > code and design work was done by Nicholas Sze, Jing Zhao, Hari Mankude,
> > Brandon Li,  Aprit Agarwal, Sanjay Radia and me. Thanks to Ramya Sunil
> for
> > doing feature testing and finding many bugs. Aaron Myers, Konstantin
> > Shvachko, Allen Wittenauer, Chris Nauroth, Todd Lipcon, Michael Stack,
> Eli
> > Collins, Lars Hofhansl
> >  and many others contributed to the feature definition, design and code
> > reviews on the jiras and during meetup.
> >
> > This vote runs for a week and closes on 5/8/2013 at 12:00 pm. Here is my
> +1
> > for the merge.
> >
> > Regards,
> > Suresh
> >
>

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