Thanks for the info Tamás.
Do you know if:
1- a workaround is planned ?
2- Maven 4 will solve this problem ?
3- commands like "-pl :myModule -am " also suffer from this kind of problem
?

I'm trying to convince everyone at work to move to a large Monorepo and my
argument is "learn how to use Maven and your builds will not be longer" but
I may have to stop immediately before it is too late !

Best regards


Le jeu. 14 nov. 2024 à 14:56, Tamás Cservenák <ta...@cservenak.net> a
écrit :

> Howdy,
>
> This is a problem with Maven 3 and how it "reduces" the reactor (when
> using -rf, -pl etc, basically when reactor < full project).
> This was already discussed once on this ML but let me shortly explain
> what happens:
>
> You basically "moved" B out of the reactor, and your "snake" looks like
> this:
>
> A (in reactor) -> B (out of reactor, like any external dep) -> C (in
> reactor).
>
> Maven 3 cannot follow these "out then back in" links, and assumes A
> and C are unrelated.
>
> The 1st command simply "loses" the link between A and C, because B got
> out of the reactor and built them in parallel.
> The 2nd command works as it is single threaded, but in fact,
> internally, it also does not "see" the relation.
>
>
>
> On Thu, Nov 14, 2024 at 2:33 PM Francois Marot <francois.ma...@gmail.com>
> wrote:
> >
> > Hello,
> >
> > I just faced a problem and would like your input if it is really a
> problem
> > or not.
> > I have a multimodule project where dependencies are like:
> >
> > A --> B --> C --> D    (A depends upon B which depends upon C and so
> on...)
> >
> > I would have expected those 2 commands to exhibit the exact same
> behaviour:
> >
> > 1- mvn package -pl :A,:C -T 1C
> > 2- mvn package -pl :A,:C
> >
> > but the problem is that when command 1 is run, both projects are built
> > simultaneously (the logs are interweaved). It should not be the case
> > because A depends transitively upon C.
> > When command 2 is run, project C is built before project A which is what
> I
> > expect.
> >
> > I'm using mvn 3.9.9
> >
> > Best regards
> >
> >
> >
> >
> >
> > *- - - - -François Marot06 50 91 96 38*
>
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