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https://issues.apache.org/jira/browse/MNG-6571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16750171#comment-16750171
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Hervé Boutemy commented on MNG-6571:
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yes, I understand that in your case you don't have anything that change any
little field in the dependencyManagement section, then everything looks like a
big waste of memory
but you may add a little override somewhere
the maven model merging is here :
https://maven.apache.org/ref/3.6.0/maven-model-builder/
I'm convinced that the vast majority of time, dependencies (be it in
dependencyManagement or base dependencies) are inherited without any
modification: that's why at first I imagined that it was feasible
but sometimes, dependencies are modified when inheriting
in
[ModelMerger|https://maven.apache.org/ref/3.6.0/maven-model/apidocs/org/apache/maven/model/merge/ModelMerger.html],
mergeDependency(Dependency target, Dependency source, boolean sourceDominant,
Map<Object,Object> context) is not really an immutable friendly signature
and also given [Dependency
code|https://maven.apache.org/ref/3.6.0/maven-model/apidocs/org/apache/maven/model/Dependency.html]
is generated by Modello, changing it to immutable form is not easy either
really, the magic of VersionRange was that it was already immutable: only the
cache was not there, then I had near nothing to do
but it's the only case like this, other cases will be much harder...
that does not mean that we won't do it in a future release: it just means that
we should do a release with VersionRange cache before trying to do more
> Maven memory consumption issue
> ------------------------------
>
> Key: MNG-6571
> URL: https://issues.apache.org/jira/browse/MNG-6571
> Project: Maven
> Issue Type: Wish
> Affects Versions: 3.6.0
> Reporter: Hervé Boutemy
> Assignee: Hervé Boutemy
> Priority: Major
> Attachments: Maven-Reactor-Dump-Patched.png, Maven-Reactor-Dump.png
>
>
> as reported on Users list:
> https://lists.apache.org/thread.html/7d75142448b3c234742bdfd3c743e2f62065fe8e0a313905cbbb2523@%3Cusers.maven.apache.org%3E
> then with details on Dev list:
> https://lists.apache.org/thread.html/34b64295238594e554f1f2f119848bce3b60d4e1e22e09f26aa64166@%3Cdev.maven.apache.org%3E
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