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http://jira.codehaus.org/browse/MNG-3408?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benjamin Bentmann closed MNG-3408.
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       Resolution: Duplicate
    Fix Version/s:     (was: 3.0-beta-1)
         Assignee: Benjamin Bentmann

While I can't quite reproduce the scenario you describe, it sounds like another 
occurrence of MNG-4452.

> Artifacts with the same pair groupId:artifactId but different type are not 
> resolved independently
> -------------------------------------------------------------------------------------------------
>
>                 Key: MNG-3408
>                 URL: http://jira.codehaus.org/browse/MNG-3408
>             Project: Maven 2 & 3
>          Issue Type: Bug
>          Components: Dependencies
>    Affects Versions: 2.0.8
>            Reporter: Nicolas Malassigné
>            Assignee: Benjamin Bentmann
>
> This problem is preventing for instance parallel builds to run in a 
> continuous server, without broken builds being falsely reported from time to 
> time.
> Ex:
> - Project B is depending on artifacts from Project A. 
> - Builds for Project A and Project B are both triggered at the same time.
> - The build of project A finishes earlier, so that Project A deploys its 
> artifacts while Project B is still building (replacing the previous 
> artifacts).
> What can happen is that the build of Project B suddenly breaks, because it 
> needs an artifact of Project A for which it already resolved the dependency, 
> but yet of a different type. Maven is writing the local metadata file when 
> resolving the pair groupId:artifactId of the first type, and is reading the 
> same metadata file when resolving the same pair of the second type (which may 
> come later in the build). 
> Actually I think that groupId:artifactId:type should be considered for the 
> uniqueness of artifacts instead of groupId:artifactId, and this information 
> be contained in the local metadata files.

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