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From Konstantin Shvachko <shv.had...@gmail.com>
Subject Re: HDFS-1623 branching strategy
Date Tue, 19 Jul 2011 15:10:45 GMT

1. I don't see any comments in HDFS-1623 since may 26.
And I don't see any updates to the design document.
While HA jiras are being committed directly to trunk.
And I personally don't like what is being committed.
Possible because I don't understand the approach.

2. Whatever the branching strategy is, the branch should be created
and the work should be done in the branch.
Please call a vote to create the branch whoever is working on it.
I don't see anybody is opposing. My +1 in advance.

3. CTR or RTC I am seriously considering to revert HDFS-2141 because
it is changing the terminology used in several design documents ans
which people got used to, and which will create more confusion.

4. Sanjay's and Suresh's document is a great strategic design for HA.
Although I do not think you can use it to implement a single approach.
As it has a lot of different choices , which make the strategy great, but
need to be resolved for practical purposes.
An implementation requires (so to speak) a tactical design doc, which
clarifies the choices taken for the implementation.
I made an attempt to resolve the choices in HDFS-2064, but you seem to
disagree with them, although I don't know which ones.

I don't think any changes should go to trunk (or the branch) without such a


On Fri, Jul 8, 2011 at 2:03 PM, sanjay Radia <sanjay@hortonworks.com> wrote:

> On Jul 8, 2011, at 12:52 PM, Allen Wittenauer wrote:
> >
> > On Jul 8, 2011, at 12:22 PM, Suresh Srinivas wrote:
> >
> >> Thanks Aaron for sending the details from the meeting that Sanjay
> >> had arranged.
> >
> >
> >       What meeting?
> >
> >
> After we posted the design document, some HDFS contributors who
> participated in the Jira  reached out
> to have a high bandwidth discussion to get clarification on the design
> document in HDFS 1623.
> Comments  posted in the jira captured the feedback on the document.
> An updated version of the document will incorporate the feedback.
> Participants were suresh, kan, sanjay, jitendra, eli, todd, aaron m,
> dhruba, dmytro.
> The agenda for the last contributors's meeting included a presentation of
> the HA design; unfortunately we ran out of time. I have requested a slot to
> present the design at the next HUG.
> sanjay

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