From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
To: Jonathan Tan <jonathantanmy@google.com>
Cc: gitster@pobox.com, christian.couder@gmail.com,
git@vger.kernel.org, pclouds@gmail.com, peff@peff.net
Subject: Re: [PATCH v3 2/3] shallow: offer to prune only non-existing entries
Date: Fri, 26 Oct 2018 09:59:46 +0200 (DST) [thread overview]
Message-ID: <nycvar.QRO.7.76.6.1810260956230.4546@tvgsbejvaqbjf.bet> (raw)
In-Reply-To: <20181025185459.206127-1-jonathantanmy@google.com>
Hi Jonathan,
On Thu, 25 Oct 2018, Jonathan Tan wrote:
> > On Wed, 24 Oct 2018, Johannes Schindelin wrote:
> >
> > Coming back to my question whether there is a better way to check for
> > the presence of a local commit, I figured that I can use
> > `has_object_file()` instead of looking up and parsing the commit, as
> > this code does not really need to verify that the shallow entry refers
> > to a commit, but only that it refers to a local object.
>
> Note that has_object_file() also triggers the lazy fetch if needed, but
> I agree that it's better because you don't really need to parse the
> commit.
Thanks for confirming.
So even better would be to use `is_promisor_object(oid) ||
has_object_file(oid)`, right?
This is something that is probably not even needed: as I mentioned, the
shallow commits are *expected* to be local. It should not ever happen that
they are fetched.
> There is the possibility of just checking for loose objects (which does
> not trigger any lazy fetches), which works for builtin/prune since it
> only prunes loose objects, but doesn't work in the general case, I
> guess.
In the test case I added, the commit object is actually packed. And then,
because it became unreachable, it is dropped.
If I only checked for loose objects here, the shallow line would already
be removed when the commit gets packed, which would be the wrong thing to
do.
In short: thank you for confirming that the current version of the patch
seems to be the best we can do for now.
Ciao,
Dscho
next prev parent reply other threads:[~2018-10-26 7:59 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-13 20:18 [PATCH 0/2] repack -ad: fix after `fetch --prune` in a shallow repository Johannes Schindelin via GitGitGadget
2018-07-11 22:17 ` [PATCH 1/2] repack: point out a bug handling stale shallow info Johannes Schindelin via GitGitGadget
2018-07-11 22:23 ` [PATCH 2/2] repack -ad: prune the list of shallow commits Johannes Schindelin via GitGitGadget
2018-07-13 20:31 ` Jeff King
2018-07-14 21:56 ` Johannes Schindelin
2018-07-16 17:36 ` Jeff King
2018-07-17 16:25 ` Junio C Hamano
2018-07-19 16:42 ` Johannes Schindelin
2018-07-19 20:49 ` Junio C Hamano
2018-07-20 9:30 ` Junio C Hamano
2018-07-20 19:31 ` Jeff King
2018-07-17 17:28 ` Duy Nguyen
2018-07-17 19:41 ` Jeff King
2018-07-18 17:31 ` Duy Nguyen
2018-07-18 17:45 ` Jeff King
2018-07-18 17:48 ` Duy Nguyen
2018-07-17 16:39 ` Duy Nguyen
2018-07-17 16:48 ` Duy Nguyen
2018-07-19 17:50 ` Johannes Schindelin
2018-07-17 13:51 ` [PATCH v2 0/2] repack -ad: fix after `fetch --prune` in a shallow repository Johannes Schindelin via GitGitGadget
2018-07-17 13:51 ` [PATCH v2 1/2] repack: point out a bug handling stale shallow info Johannes Schindelin via GitGitGadget
2018-07-17 13:51 ` [PATCH v2 2/2] repack -ad: prune the list of shallow commits Johannes Schindelin via GitGitGadget
2018-07-17 17:45 ` Eric Sunshine
2018-07-17 19:15 ` [PATCH v2 0/2] repack -ad: fix after `fetch --prune` in a shallow repository Jeff King
2018-07-17 19:20 ` Jeff King
2018-07-19 17:48 ` Johannes Schindelin
2018-10-22 22:05 ` [PATCH v3 0/3] repack -ad: fix after fetch --prune " Johannes Schindelin via GitGitGadget
2018-10-22 22:05 ` [PATCH v3 1/3] repack: point out a bug handling stale shallow info Johannes Schindelin via GitGitGadget
2018-10-24 3:39 ` Junio C Hamano
2018-10-24 8:12 ` Johannes Schindelin
2018-10-24 8:38 ` Johannes Schindelin
2018-10-22 22:05 ` [PATCH v3 2/3] shallow: offer to prune only non-existing entries Johannes Schindelin via GitGitGadget
2018-10-24 3:47 ` Junio C Hamano
2018-10-24 8:01 ` Johannes Schindelin
2018-10-24 15:56 ` Johannes Schindelin
2018-10-25 18:54 ` Jonathan Tan
2018-10-26 7:59 ` Johannes Schindelin [this message]
2018-10-26 20:49 ` Jonathan Tan
2018-10-29 20:45 ` Johannes Schindelin
2018-10-22 22:05 ` [PATCH v3 3/3] repack -ad: prune the list of shallow commits Johannes Schindelin via GitGitGadget
2018-10-24 3:56 ` Junio C Hamano
2018-10-24 8:02 ` Johannes Schindelin
2018-10-23 10:15 ` [PATCH v3 0/3] repack -ad: fix after fetch --prune in a shallow repository Johannes Schindelin
2018-10-24 15:56 ` [PATCH v4 " Johannes Schindelin via GitGitGadget
2018-10-24 15:56 ` [PATCH v4 1/3] repack: point out a bug handling stale shallow info Johannes Schindelin via GitGitGadget
2018-10-24 15:56 ` [PATCH v4 2/3] shallow: offer to prune only non-existing entries Johannes Schindelin via GitGitGadget
2018-10-24 15:56 ` [PATCH v4 3/3] repack -ad: prune the list of shallow commits Johannes Schindelin via GitGitGadget
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