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From Konstantin Shvachko <shv.had...@gmail.com>
Subject Re: [VOTE] Merge HDFS-3077 (QuorumJournalManager) branch to trunk
Date Wed, 26 Sep 2012 06:21:53 GMT
I think this is a great work, Todd.
And I think we should not merge it into trunk or other branches.
As I suggested earlier on this list I think this should be spinned off
as a separate project or a subproject.

- The code is well detached as a self contained package.
- It is a logically stand-alone project that can be replaced by other
technologies.
- If it is a separate project then there is no need to port it to
other versions. You can package it as a dependent jar.
- Finally, it will be a good precedent of spinning new projects out of
HDFS rather than bringing everything under HDFS umbrella.

Todd, I had a feeling you were in favor of this direction?

Thanks,
--Konstantin

On Tue, Sep 25, 2012 at 4:58 PM, Eli Collins <eli@cloudera.com> wrote:
> +1   Awesome work Todd.
>
> On Tue, Sep 25, 2012 at 4:02 PM, Todd Lipcon <todd@cloudera.com> wrote:
>> Dear fellow HDFS developers,
>>
>> Per my email thread last week ("Heads up: merge for QJM branch soon"
>> at http://markmail.org/message/vkyh5culdsuxdb6t) I would like to
>> propose merging the HDFS-3077 branch into trunk. The branch has been
>> active since mid July and has stabilized significantly over the last
>> two months. It has passed the full test suite, findbugs, and release
>> audit, and I think it's ready to merge at this point.
>>
>> The branch has been fully developed using the standard
>> 'review-then-commit' (RTC) policy, and the design is described in
>> detail in a document attached to HDFS-3077 itself. The code itself has
>> been contributed by me, Aaron, and Eli, but I'd be remiss not to also
>> acknowledge the contributions to the design from discussions with
>> Suresh, Sanjay, Henry Robinson, Patrick Hunt, Ivan Kelly, Andrew
>> Purtell, Flavio Junqueira, Ben Reed, Nicholas, Bikas, Brandon, and
>> others. Additionally, special thanks to Andrew Purtell and Stephen Chu
>> for their help with cluster testing.
>>
>> This initial VOTE is to merge only into trunk, but, following the
>> pattern of automatic failover, I expect to merge it into branch-2
>> within a few weeks as well. The merge to branch-2 should be clean, as
>> both I and Andrew Purtell have been testing on branch-2-derived
>> codebases in addition to trunk.
>>
>> Please cast your vote by EOD Friday 9/29. Given that the branch has
>> only had small changes in the last few weeks, and there was a "heads
>> up" last week, I trust this should be enough time for committers to
>> cast their votes. Per our by-laws, we need a minimum of three binding
>> +1 votes from committers.
>>
>> I will start the voting with my own +1.
>>
>> Thanks
>> -Todd
>> --
>> Todd Lipcon
>> Software Engineer, Cloudera

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