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Re: Ev2 RA protocols

From: Hyrum K Wright <hyrum.wright_at_wandisco.com>
Date: Fri, 6 Apr 2012 13:24:39 -0500

On Fri, Apr 6, 2012 at 1:10 PM, Greg Stein <gstein_at_gmail.com> wrote:
> On Apr 6, 2012 2:05 PM, "Hyrum K Wright" <hyrum.wright_at_wandisco.com> wrote:
>> In case folks haven't been following commits@, there's been a bit of
>> work on the ev2-export branch on implementing Ev2 drivers for commits.
>>  While we're not quite ready for it yet, at some point we'll need to
>> start thinking about how to marshall Ev2 drives over the wire to
>> waiting servers.  As this design work is largely orthogonal to the
>> current implementation efforts, and my familiarity with our existing
>> protocols is pretty weak, I'd invite other folks to start thinking
>> about these issues and discussing them here.
> Already ahead of you :-)
> I was going to suggest a new RA API rather than rev'ing get_commit_editor.
> By going that route, the coding can occur on trunk, and we migrate as
> appropriate, leaving the delta editor in place.

Yep, that's the same conclusion I reached a few days ago. ;)

> This would be the new "commit plan, followed by drive" design we discussed.
> The new RA entrypoint(s) could even have a default implementation in ra/
> that would use the original delta editor. Thus, we don't even have to
> implement the new interface for all layers.

This is a possibility. The current commit_editor4() on the ev2-export
branch wraps the Ev1 implementation using the shims.


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Received on 2012-04-06 20:25:12 CEST

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