Re: CAREFUL! No more delta object support!

From: Linus Torvalds <torvalds@osdl.org>
Date: Jun 29, 2005, 21:38 UTC
Message-ID: <Pine.LNX.4.58.0506291435310.14331@ppc970.osdl.org>
In-Reply-To: <Pine.LNX.4.21.0506291644120.30848-100000@iabervon.org>

On Wed, 29 Jun 2005, Daniel Barkalow wrote:

Show 10 quoted lines

> 
> > Of course, you can do this one branch at a time, too, if you want to, but
> > the above was meant as an example of how you can actually do all the
> > branches in one single pack-file, which is a lot more efficient (if you do
> > it one branch at a time, you'll quite possible end up transferring objects
> > that are reachable in other branches multiple times, while the "all in one
> > go" thing will pack each object just once).
> 
> It should transfer each only once if you recalculate "refs_in_b" after
> each push, right?

Yes, you can do it that way too. It will possibly not pack as well due to giving you fewer opportunities for deltas, but that's likely not a huge issue.

> The one thing I can think of is whether things will blow up if the target
> repository has heads that aren't in the source

Right. I think that's a "feature" of pushing: you cannot push to an archive that has state that you don't know about. Ie you can only push to something that is a proper subset of what you are (on a per-branch basis, of course - not necessarily on a "global" stage - so you could push just _one_ branch, even if another branch was ahead of where you are).

			Linus