[11u] Proposal: Switch jdk11u development to Git/Skara with 11.0.13 cycle

[Severin Gehwolf]

On Wed, 2021-02-10 at 16:39 +0000, Langer, Christoph wrote:
> Hi,
>  
> after most of the OpenJDK projects, including OpenJDK updates 13u and
> 16u, have already moved to git, we’d like to propose the
> transitioning of 11u to git as well. The topic has been brought up in
> a few discussions already, e.g. [0].
>  
> Our proposal would be to move the JDK 11 updates project to
> Github/Skara with the 11.0.13 development cycle. The git switch of
> jdk11u-dev should happen on June 2, 2021, which is when 11.0.13
> development starts. With the first promotion of 11.0.13 to the jdk11u
> stabilization repository on August 3, 2021, we would then also switch
> the jdk11u repository to git.
>  
> This means that On June 2, 2021, the jdk11u-dev mercurial repository
> [1] would be made read-only and changes for 11.0.13 ought to be
> pushed to the jdk11u-dev github repo [2]. On August 3, 2021, the
> jdk11u mercurial repo [3] would be set read-only and the equivalent
> git repo [4] will be opened for pushes. After the moves, the
> mercurial repositories will contain 11.0.12 and be updated no
> further.
>  
> This is why we think the project should move to git:
> * Git/Github is used by the OpenJDK project in head and the higher
> update releases. JDK11u will certainly benefit if it uses the same
> processes
> * The tooling and infrastructure (Skara) is the maintained set of
> tooling
> * The Git/Skara processes have the potential to simplify the
> backporting processes and could improve the productivity in the JDK
> 11 updates project
> * Git is probably the most prevalent SCM for downstream consumers
> which means that the downstream processes to consume the git
> repositories should largely be available by now or can be made
> available until the time of the switch without extraordinary cost
>  
> At the time of the 11.0.13 cycle, the backport tooling should have
> reached a convenient state of maturity, suitable for the 11u project.
>  
> Looking forward to your thoughts and arguments…

I support this proposal, though, I don't have strong feelings either
way :)

Thanks,
Severin


> Best regards,
> Christoph and Goetz
>  
> [0] 
> https://mail.openjdk.java.net/pipermail/jdk-updates-dev/2020-December/004450.html
> [1] http://hg.openjdk.java.net/jdk-updates/jdk11u-dev 
> [2] https://github.com/openjdk/jdk11u-dev
> [3] http://hg.openjdk.java.net/jdk-updates/jdk11u
> [4] https://github.com/openjdk/jdk11u
>