From: Josh Steadmon <steadmon@google.com>
To: Jeff King <peff@peff.net>
Cc: "SZEDER Gábor" <szeder.dev@gmail.com>,
git@vger.kernel.org, jonathantanmy@google.com,
jrnieder@gmail.com
Subject: Re: [PATCH v3] rev-list: exclude promisor objects at walk time
Date: Fri, 12 Apr 2019 15:38:47 -0700 [thread overview]
Message-ID: <20190412223847.GO60888@google.com> (raw)
In-Reply-To: <20190411040642.GA8418@sigill.intra.peff.net>
On 2019.04.11 00:06, Jeff King wrote:
> On Tue, Apr 09, 2019 at 04:42:55PM -0700, Josh Steadmon wrote:
>
> > > warning: reflog of 'HEAD' references pruned commits
> > > warning: reflog of 'refs/heads/master' references pruned commits
> > > fatal: unable to read 71905dfcd543b7cbb0b4b66fbd20379e67220557
> > > error: last command exited with $?=128
> > > not ok 23 - repack -d does not irreversibly delete promisor objects
> > >
> >
> > Thank you for catching this. I haven't yet figured out the cause. I will
> > look into this more tomorrow and then send a V4 once I've fixed it.
>
> I'm concerned that this is a sign that the approach I suggested does not
> actually work everywhere. I.e., could this be a case where we have some
> non-promisor object that points to a sub-object that is reachable from
> the promisor pack, but not a direct tip? Before your patch we'd consider
> that sub-object a promisor (because we enumerate all of the graph that
> we do have and mark each such object), but afterwards we would not.
>
> And I wonder if that confuses pack-objects. Though I think it would
> confuse it in the _opposite_ direction. I.e., using
> --exclude-promisor-objects would count such an object as not-a-promisor
> and would be more inclined to include it in the new pack.
>
> It is curious that this only turns up with GIT_TEST_COMMIT_GRAPH=1, too.
> It seems like any such problem ought to be independent of that.
>
> Puzzling...
>
> -Peff
Do you think this justifies going back to the V1 approach (only checking
presence of objects pointed to by refs when doing a partial clone)?
next prev parent reply other threads:[~2019-04-12 22:39 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-03 17:27 [PATCH] clone: do faster object check for partial clones Josh Steadmon
2019-04-03 18:58 ` Jonathan Tan
2019-04-03 19:41 ` Jeff King
2019-04-03 20:57 ` Jonathan Tan
2019-04-04 0:21 ` Josh Steadmon
2019-04-04 1:33 ` Jeff King
2019-04-04 22:53 ` [PATCH v2] rev-list: exclude promisor objects at walk time Josh Steadmon
2019-04-04 23:08 ` Jeff King
2019-04-04 23:47 ` Josh Steadmon
2019-04-05 0:00 ` Jeff King
2019-04-05 0:09 ` Josh Steadmon
2019-04-08 20:59 ` Josh Steadmon
2019-04-08 21:06 ` [PATCH v3] " Josh Steadmon
2019-04-08 22:23 ` Christian Couder
2019-04-08 23:12 ` Josh Steadmon
2019-04-09 15:14 ` Junio C Hamano
2019-04-09 15:15 ` Jeff King
2019-04-09 15:43 ` Junio C Hamano
2019-04-09 16:35 ` Josh Steadmon
2019-04-09 18:04 ` SZEDER Gábor
2019-04-09 23:42 ` Josh Steadmon
2019-04-11 4:06 ` Jeff King
2019-04-12 22:38 ` Josh Steadmon [this message]
2019-04-13 5:34 ` Jeff King
2019-04-19 20:26 ` Josh Steadmon
2019-04-19 21:00 ` [PATCH v4] clone: do faster object check for partial clones Josh Steadmon
2019-04-22 21:31 ` Jeff King
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