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https://issues.apache.org/jira/browse/MNG-6575?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16767914#comment-16767914
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Yann Dameron commented on MNG-6575:
-----------------------------------
Sound like much more changes than what I do (as I focused on memory
consumption). Attach the patch for reference.
> make Dependency immutable
> -------------------------
>
> Key: MNG-6575
> URL: https://issues.apache.org/jira/browse/MNG-6575
> Project: Maven
> Issue Type: Improvement
> Components: Dependencies, Inheritance and Interpolation
> Affects Versions: 3.6.0
> Reporter: Hervé Boutemy
> Priority: Major
> Attachments: MNG-6575-maven-model.patch,
> dump-with-mng-6571-fixes.png, dump-with-wrapper-approach.png
>
>
> while working on Maven memory consumption issue MNG-6571, once VersionRange
> is made immutable, memory used was divided by 2: the next big expected win is
> to make Dependency immutable, which would probably once again divide memory
> by 2 because the vast majority of time, dependencies (be it in
> dependencyManagement or base dependencies) are inherited without any
> modification
> this will require to change
> [ModelMerger|https://maven.apache.org/ref/3.6.0/maven-model/apidocs/org/apache/maven/model/merge/ModelMerger.html]
> 's {{mergeDependency(Dependency target, Dependency source, boolean
> sourceDominant, Map<Object,Object> context)}} signature, since is not really
> an immutable friendly signature
> and also make [Dependency
> code|https://maven.apache.org/ref/3.6.0/maven-model/apidocs/org/apache/maven/model/Dependency.html]
> immutable (generated by Modello)
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