[graalvm-dev] Mandrel versioning scheme

[Oleg Šelajev]

Hi Foivos, 

we've updated the page with the roadmap, not to list outdated information https://www.graalvm.org/docs/release-notes/version-roadmap/ <https://www.graalvm.org/docs/release-notes/version-roadmap/>


Regarding the versioning question, we're discussing this and will come back with thoughts. 

Thanks, 
Oleg

> On 16 Jul 2020, at 16:11, Foivos Zakkak <fzakkak at redhat.com> wrote:
> 
> Hello all,
> 
> I would like to bring to your attention an issue that came up regarding
> the versioning scheme of Mandrel.
> 
> Based on the graalvm roadmap [1] (which appears to be outdated per [2])
> the Mandrel team initially decided to follow the following version scheme:
> 
> YY.X.Z.W where YY.X.Z would be the graalVM CE version that Mandrel
> YY.X.Z.W is based on, and W would be an incremental number for patches
> on the Mandrel side (including backports, bug fixes, features, etc.).
> So 20.1.0.3 would be based on GraalVM 20.1.0 CE, 20.1.1.2 would be based
> on GraalVM 20.1.1 CE etc.
> 
> However, according to the new roadmap [2] there will be no YY.0.1,
> YY.1.1, and YY.2.1 CE releases only YY.0 YY.1 YY.2 and YY.3.0-3.
> In the old roadmap [1], YY.Z.1 releases were meant to be CPU releases
> (aligned with openJDK CPU releases), but in the new roadmap CPU patches
> will appear in the next Minor Feature Release (e.g. in 20.2 instead of
> 20.1.1).
> 
> The mandrel team would like to keep its CPU releases as close as
> possible to the openJDK CPU releases, thus it would like to stay closer
> to the old roadmap.
> As a result a new mandrel release is expected to come out with each
> openJDK CPU release (or a few days later).
> This mandrel release will be based on the latest mandrel release (which
> will probably be aligned with the latest GraalVM CE release).
> 
> So at this point we have a CPU release candidate that is based on
> Mandrel 20.1.0.0 which in turn is based on GraalVM 20.1.0 CE.
> The question is how should this Mandrel release be tagged? 20.1.0.1 or
> 20.1.1.0 or something else?
> 
> 20.1.0.1 makes clear that the release is based on GraalVM 20.1.0 CE and
> there is no chance of anyone relating it to GraalVM 20.1.1 EE.
> On the other hand if we have multiple releases e.g., 20.1.0.0, 20.1.0.1,
> 20.1.0.2, and 20.1.0.3 there is no way to tell which of them arre CPU
> releases.
> 
> 20.1.1.0 makes clear that this is a CPU release but people might be
> confused regarding its relationship to GraalVM 20.1.1 EE.
> Another issue with this scheme is that Mandrel will probably release
> 20.3.1 before GraalVM CE 20.3.1 so there might be some confusion there
> as well.
> 
> What are your thoughts?
> 
> Regards,
> Foivos
> 
> [1] https://www.graalvm.org/docs/release-notes/version-roadmap/
> [2] https://graalvm.slack.com/archives/CNBFR78F9/p1594804615255100
> 
> 
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