Re: [FFmpeg-devel] [RFC] fate rsync switch to git

[epirat07@gmail.com]

On 21 Feb 2024, at 15:38, Niklas Haas wrote:

> On Tue, 20 Feb 2024 20:43:30 +0200 Jan Ekström <jeebjp@gmail.com> wrote:
>> Do note that the idea was that this would only be for management of
>> the main archive, so it would not affect clients/runners rsync'ing
>> from the main archive.
>>
>> Of course clients which want to sync directly from git could do that,
>> but the idea would be to keep the sync requirements same for FATE
>> clients/runners: if you are only running tests, rsync is enough.
>>
>> As after all, the primary reasons for having the samples in git would
>> be versioning, more concrete known states in a public archive (I would
>> probably not call this a "backup", but it would mean we would have the
>> history in multiple places at least), as well as - if we utilize
>> something like git{lab,hub} - easier workflow to adding new samples by
>> means of f.ex. merge/pull requests.
>>
>> This idea originated from looking at how the dav1d project handled
>> their reference sample suite, which seems to have served them well
>> enough: https://code.videolan.org/videolan/dav1d-test-data
>>
>> Regards,
>> Jan
>
> Is there any reason (besides efficiency hit) not to make the FATE repo
> a `git submodule` of the FFmpeg git repo? That way, commits which depend
> on certain additions to fate-samples can explicitly depend on the
> commits adding those files, developers can more easily see (e.g. via
> `git status`) if the fate samples are out-of-date (or use `git pull
> --recurse-submodules` to automate the process).

I am all for having it in git but do not like the idea of a git submodule
at all as they are a nightmare to work with, sometimes create absolutely
unworkable conflicts when rebasing and other oddities…

(We use submodules for the Icecast project, it was my idea back then and
I regret it…)

>
> It will also make the samples repo historically consistent, e.g. if
> somebody changes a detail about a file in a later commit, older commits
> referencing the unmodified version will continue passing FATE tests. I'm
> not sure if this has ever been a concern in the past, but it may well
> be one in the future.
>
> Worrying about the performance impact of rsync vs git-lfs (or equivalent
> solutions) seems like premature optimization to me; and the ease of
> maintenance, historical consistency, transparency in process, and
> end-user convenience of a git repository seems to far outweigh the
> drawbacks.
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