[llvm-dev] [Openmp-dev] Bugzilla migration is stopped again

[Roman Lebedev via llvm-dev]

On Mon, Dec 6, 2021 at 12:31 PM David Chisnall via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
>
> On 04/12/2021 09:58, Anton Korobeynikov via llvm-dev wrote:
> >> Is it really impossible to just completely remove all the current
> >> issues and PR's in a repository and reset the counter, so that none of
> >> this remapping is necessary in the first place?
> > I asked this question many times at different levels. As far as I was
> > told – yes. The bulk import could only happen to the empty repo. If
> > you know how it could be done in another way – please let us know.
> >
>
> If I understand the GitHub process correctly, PR / issue numbers are
> monotonic integers that cannot be rolled back or modified because they
> are used in cross-referencing and are externally visible.  The mapping
> from repository to name; however, is mutable (with big warnings when you
> press the button because it breaks the aforementioned cross-referencing
> and external links).
>
> It should be possible to:
>
>   1. Create a new empty private GitHub project.
>   2. Import all bugs, with the same bug numbers.
>   3. Make the project public.
>   4. Pull the entire contents of the current repo to the new project.
>   5. Delete the llvm-project project (or rename it to llvm-project.old
> or something).
>   6. Rename the new project to llvm-project
>
> Steps 5 and 6 can't be atomic, so this will break everything that tries
> to access the repo between steps 5 and 6, but that should be about 30
> seconds of downtime.  The end result should be a llvm/llvm-project
> GitHub project containing the current git repo and the issues from
> Bugzilla but not any of the existing issues / PRs on that repo.
I also suggested that, but the thing that apparently throws the wrench
at that is that (as per @aKor's previous mail), the bugzilla issues id's
aren't consecutive, there are gaps, so just importing into a clean repo
(even without having to worry about moving issues into a new repo)
still won't result in 1:1 match to bugzilla issue id's. It would have been nice
to know this beforehand. This means that missing issue id's would need to
be padded with empty issues.

> David
Roman

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