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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
HDFS-2802 branch has been merged into trunk. Thanks Nicholas for
maintaining the merge patch and merging the branch into trunk.

Regards,
Suresh
On Wed, May 8, 2013 at 1:16 PM, Suresh Srinivas <[EMAIL PROTECTED]>wrote:

> With 3 +1 binding votes, the vote to merge Snapshot feature from HDFS-2802
> branch to trunk passes. The code will be merged soon into. The remaining
> open issues related to this feature will be addressed in trunk.
>
> Thanks to everyone who voted.
>
> Regards,
> Suresh
>
>
> On Wed, May 8, 2013 at 1:12 PM, Suresh Srinivas <[EMAIL PROTECTED]>wrote:
>
>> 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

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