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https://issues.apache.org/jira/browse/MNG-6772?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17338118#comment-17338118
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Hudson commented on MNG-6772:
-----------------------------

Build succeeded in Jenkins: Maven » Maven TLP » maven » ver #2

See https://ci-builds.apache.org/job/Maven/job/maven-box/job/maven/job/ver/2/

> Super POM overwrites remapped central repository in nested 
> dependencyManagement import POMs
> -------------------------------------------------------------------------------------------
>
>                 Key: MNG-6772
>                 URL: https://issues.apache.org/jira/browse/MNG-6772
>             Project: Maven
>          Issue Type: Bug
>          Components: Artifacts and Repositories, POM
>    Affects Versions: 3.6.2
>            Reporter: Eddie Wiegers
>            Priority: Major
>             Fix For: 4.0.x-candidate
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> My projects define a repository with {{<id>central</id>,}} which is meant to 
> specifically override the entry in the Super POM. This is specifically what 
> [JFrog Artifactory 
> recommends|https://www.jfrog.com/confluence/display/RTF/Maven+Repository#MavenRepository-ManuallyOverridingtheBuilt-inRepositories]
>  doing, and seems valid in situations where the _real_ Maven Central may be 
> unreachable.
>  
> The override takes precedence almost all of the time. However, there is at 
> least one scenario where this is not the case, and that is when importing a 
> POM that in turn imports another POM.
>  
> Digging into the code, it appears the reason this happens is because the 
> {{DefaultModelBuilder}} overwrites repositories after interpolation is 
> complete:
> [https://github.com/apache/maven/blob/53f04f03e3e58c75dcc791d557758357a6ec7983/maven-model-builder/src/main/java/org/apache/maven/model/building/DefaultModelBuilder.java#L411]
>  
> From what I can tell, this is done with the intention of overwriting 
> repositories that were added to the local resolver prior to interpolation 
> with the interpolated version. Due to the way the {{DefaultModelResolver}} 
> works, an unintended side effect is that the {{central}} repository from the 
> Super POM is added once after each interpolation. The first time the 
> repository is added, it is added to the {{repositoryIds}} but doesn't 
> actually remove the original repository. The second time it is added is when 
> the original repository will be replaced. Currently, the repositoryIds are 
> preserved in the {{ModelResolver}} when resolving import POMs, leading to the 
> behavior I am seeing where the second nested import POM ends up being where 
> the failure occurs.
>  
> I am planning on submitting a PR to clone the {{ModelResolver}} in a way that 
> resets the repositoryIds prior to import POMs being resolved, since they are 
> separate artifact builds. That seems like the most consistent fix to me that 
> covers cases outside of the the Super POM's {{central}} definition.
>  
> *Workarounds*:
> The current workaround is to use a repository ID other than {{central}} for 
> my Artifactory repository, which isn't ideal since it leaves the potential 
> for long timeouts to occur on the real {{central}} when an artifact can't be 
> resolved from my Artifactory repository.
>  
> Mirrors are not an ideal workaround since getting them in place on all 
> possible build environments isn't trivial.
>  
> When looking at the code I noticed 
> {{RepositorySystemSession#isIgnoreArtifactDescriptorRepositories()}} being 
> checked in various places, which seems like it would also act as a potential 
> workaround, but I don't see a way to enable this value via MavenCLI or 
> properties of any kind. It seems like this value aligns well with what 
> Artifactory is already trying to enforce, so it would make sense to enable 
> this in projects that intend to exclusively use Artifactory. Is there a 
> supported way to set this value outside of constructing a Maven build in code?



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