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Re: [PATCH] reachable: only mark local objects as recent

From
Jeff King <peff@peff.net>
Date
Apr 17, 2015, 13:28 UTC
Message-ID
<20150417132824.GA13192@peff.net>
In-Reply-To
<xmqqa8yyw9je.fsf@gitster.dls.corp.google.com>
On Fri, Mar 27, 2015 at 12:00:05PM -0700, Junio C Hamano wrote:
Show 21 quoted lines
> Jeff King <peff@peff.net> writes:
> 
> > It is possible that we may drop an object that is depended
> > upon by another object in the alternate. For example,
> > imagine two repositories, A and B, with A pointing to B as
> > an alternate. Now imagine a commit that is in B which
> > references a tree that is only in A. Traversing from recent
> > objects in B might prevent A from dropping that tree. But
> > this case isn't worth covering. Repo B should take
> > responsibility for its own objects. It would never have had
> > the commit in the first place if it did not also have the
> > tree, and assuming it is using the same "keep recent chunks
> > of history" scheme, then it would itself keep the tree, as
> > well.
> 
> In other words, if you have a loop in dependency chain among
> alternate repositories, your set-up is broken by definition.
> 
> Which makes sense to me.
> 
> Thanks.

I don't see this patch in "pu" or "What's Cooking" at all. Did it get dropped?

It does fix a performance regression, but the problem is in v2.2, so I don't think it's urgent for v2.4-rc.

-Peff
Previous: Junio C HamanoNext: Junio C Hamano
Message 3 of 4 in “reachable: only mark local objects as recent”
  1. reachable: only mark local objects as recentJeff King, Mar 27, 2015
  2. Junio C HamanoMar 27, 2015
  3. Jeff KingApr 17, 2015
  4. Junio C HamanoApr 17, 2015

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