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From: Derrick Stolee <stolee@gmail.com>
To: Elijah Newren <newren@gmail.com>,
	Derrick Stolee via GitGitGadget <gitgitgadget@gmail.com>
Cc: "Git Mailing List" <git@vger.kernel.org>,
	"Junio C Hamano" <gitster@pobox.com>, "Jeff King" <peff@peff.net>,
	"Jonathan Nieder" <jrnieder@gmail.com>,
	"Eric Sunshine" <sunshine@sunshineco.com>,
	"Nguyễn Thái Ngọc" <pclouds@gmail.com>,
	"Derrick Stolee" <derrickstolee@github.com>,
	"Derrick Stolee" <dstolee@microsoft.com>
Subject: Re: [PATCH 26/27] pathspec: stop calling ensure_full_index
Date: Mon, 1 Feb 2021 21:39:56 -0500	[thread overview]
Message-ID: <a73d4cd4-7a5e-dc5d-f381-62666ff1c360@gmail.com> (raw)
In-Reply-To: <CABPp-BHv+kAV5BfrhdQ+Vo-q_eVs7a3MvLYg0wYhZQoyvCoqaw@mail.gmail.com>

On 2/1/2021 6:24 PM, Elijah Newren wrote:
> On Mon, Jan 25, 2021 at 9:42 AM Derrick Stolee via GitGitGadget
> <gitgitgadget@gmail.com> wrote:
>>
>> From: Derrick Stolee <dstolee@microsoft.com>
>>
>> The add_pathspec_matches_against_index() focuses on matching a pathspec
>> to file entries in the index. It is possible that this already works
>> correctly for its only use: checking if untracked files exist in the
>> index.
>>
>> It is likely that this causes a behavior issue when adding a directory
>> that exists at HEAD but is outside the sparse cone. I'm marking this as
>> a place to pursue with future tests.
> 
> Sounds like you're unsure if this patch is good.  Should it be marked
> RFC or something?

...isn't the whole series marked as RFC? I only specifically marked the
ensure_full_index() one because I purposefully squashed it.

But in general, everything I'm touching in these areas seems like a
potentially problematic change. So many things are used and re-used
that I'm not sure what is safe or not. More testing is required for
commands to ensure their behavior.

I can enable things like GIT_TEST_SPARSE_INDEX to get other tests
using sparse-checkout to work (but only if they use cone mode). Hence,
I'm relying on what tests I can write to cover the behavior instead of
a robust history of valuable tests.

I hope to gather more confidence as this goes forward. I definitely
work to be confident that I am not making any errors that cause
problems for users who do not enable the sparse-index, but I expect
there to be a long tail of adjustments required as more corner
cases are discovered during the development and testing of the
feature.

The good news is that I have some engaged users who are willing to
test the feature and provide feedback if they hit any snags once
there is a minimal set of functionality.

Thanks,
-Stolee

  reply	other threads:[~2021-02-02  2:40 UTC|newest]

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-25 17:41 [PATCH 00/27] [RFC] Sparse Index Derrick Stolee via GitGitGadget
2021-01-25 17:41 ` [PATCH 01/27] sparse-index: add guard to ensure full index Derrick Stolee via GitGitGadget
2021-01-25 17:41 ` [PATCH 02/27] sparse-index: implement ensure_full_index() Derrick Stolee via GitGitGadget
2021-01-27  3:05   ` Elijah Newren
2021-01-27 13:43     ` Derrick Stolee
2021-01-27 16:38       ` Elijah Newren
2021-01-28  5:25     ` Junio C Hamano
2021-01-25 17:41 ` [PATCH 03/27] t1092: compare sparse-checkout to sparse-index Derrick Stolee via GitGitGadget
2021-01-27  3:08   ` Elijah Newren
2021-01-27 13:30     ` Derrick Stolee
2021-01-27 16:54       ` Elijah Newren
2021-01-25 17:41 ` [PATCH 04/27] test-read-cache: print cache entries with --table Derrick Stolee via GitGitGadget
2021-01-27  3:25   ` Elijah Newren
2021-01-25 17:41 ` [PATCH 05/27] test-tool: read-cache --table --no-stat Derrick Stolee via GitGitGadget
2021-01-25 17:41 ` [PATCH 06/27] test-tool: don't force full index Derrick Stolee via GitGitGadget
2021-01-25 17:41 ` [PATCH 07/27] unpack-trees: ensure " Derrick Stolee via GitGitGadget
2021-01-27  4:43   ` Elijah Newren
2021-01-25 17:41 ` [PATCH 08/27] sparse-checkout: hold pattern list in index Derrick Stolee via GitGitGadget
2021-01-27 17:00   ` Elijah Newren
2021-01-28 13:12     ` Derrick Stolee
2021-01-25 17:41 ` [PATCH 09/27] sparse-index: convert from full to sparse Derrick Stolee via GitGitGadget
2021-01-27 17:30   ` Elijah Newren
2021-01-25 17:41 ` [PATCH 10/27] submodule: sparse-index should not collapse links Derrick Stolee via GitGitGadget
2021-01-25 17:41 ` [PATCH 11/27] unpack-trees: allow sparse directories Derrick Stolee via GitGitGadget
2021-01-27 17:36   ` Elijah Newren
2021-01-25 17:41 ` [PATCH 12/27] sparse-index: check index conversion happens Derrick Stolee via GitGitGadget
2021-01-27 17:46   ` Elijah Newren
2021-01-25 17:41 ` [PATCH 13/27] sparse-index: create extension for compatibility Derrick Stolee via GitGitGadget
2021-01-27 18:03   ` Elijah Newren
2021-01-25 17:42 ` [PATCH 14/27] sparse-checkout: toggle sparse index from builtin Derrick Stolee via GitGitGadget
2021-01-27 18:18   ` Elijah Newren
2021-01-28 15:26     ` Derrick Stolee
2021-01-25 17:42 ` [PATCH 15/27] [RFC-VERSION] *: ensure full index Derrick Stolee via GitGitGadget
2021-02-01 20:22   ` Elijah Newren
2021-02-01 21:10     ` Derrick Stolee
2021-01-25 17:42 ` [PATCH 16/27] unpack-trees: make sparse aware Derrick Stolee via GitGitGadget
2021-02-01 20:50   ` Elijah Newren
2021-02-09 17:23     ` Derrick Stolee
2021-01-25 17:42 ` [PATCH 17/27] dir.c: accept a directory as part of cone-mode patterns Derrick Stolee via GitGitGadget
2021-02-01 22:12   ` Elijah Newren
2021-01-25 17:42 ` [PATCH 18/27] status: use sparse-index throughout Derrick Stolee via GitGitGadget
2021-01-25 17:42 ` [PATCH 19/27] status: skip sparse-checkout percentage with sparse-index Derrick Stolee via GitGitGadget
2021-01-25 17:42 ` [PATCH 20/27] sparse-index: expand_to_path() trivial implementation Derrick Stolee via GitGitGadget
2021-01-25 17:42 ` [PATCH 21/27] sparse-index: expand_to_path no-op if path exists Derrick Stolee via GitGitGadget
2021-02-01 22:34   ` Elijah Newren
2021-01-25 17:42 ` [PATCH 22/27] add: allow operating on a sparse-only index Derrick Stolee via GitGitGadget
2021-02-01 23:08   ` Elijah Newren
2021-01-25 17:42 ` [PATCH 23/27] submodule: die_path_inside_submodule is sparse aware Derrick Stolee via GitGitGadget
2021-01-25 17:42 ` [PATCH 24/27] dir: use expand_to_path in add_patterns() Derrick Stolee via GitGitGadget
2021-02-01 23:21   ` Elijah Newren
2021-01-25 17:42 ` [PATCH 25/27] fsmonitor: disable if index is sparse Derrick Stolee via GitGitGadget
2021-01-25 17:42 ` [PATCH 26/27] pathspec: stop calling ensure_full_index Derrick Stolee via GitGitGadget
2021-02-01 23:24   ` Elijah Newren
2021-02-02  2:39     ` Derrick Stolee [this message]
2021-01-25 17:42 ` [PATCH 27/27] cache-tree: integrate with sparse directory entries Derrick Stolee via GitGitGadget
2021-02-01 23:54   ` Elijah Newren
2021-02-02  2:41     ` Derrick Stolee
2021-02-02  3:05       ` Elijah Newren
2021-01-25 20:10 ` [PATCH 00/27] [RFC] Sparse Index Junio C Hamano
2021-01-25 21:18   ` Derrick Stolee
2021-02-02  3:11 ` Elijah Newren

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