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https://issues.apache.org/jira/browse/MNG-6415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16484571#comment-16484571
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Seckin Onur SELAMET commented on MNG-6415:
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I kindly disagree with that statement. Java classloader cares about the order 
of the entries listed in classpath. So the other applications/tools those are 
built on top of it or those are helping java community to be more productive 
must follow the same approach.

That statement can be an advice for a developer to avoid this kind of bugs or 
some design rules violated by artifact providers but it is not a technical rule 
Java features.

> Project Artifacts Cache does not retain the order of classpath entries.
> -----------------------------------------------------------------------
>
>                 Key: MNG-6415
>                 URL: https://issues.apache.org/jira/browse/MNG-6415
>             Project: Maven
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.5.2
>         Environment: Windows 7, JDK8u144
>            Reporter: Seckin Onur SELAMET
>            Priority: Major
>              Labels: CLASSPATH
>         Attachments: 
> [MNG-6415]_Fixes_Project_Artifact_Cache_classpath_order_retaining_issue_.patch
>
>
> Project artifacts cache does not retain the order of classpath entries.
> Wrong Object type used in implementation. HashSet can not guarantee the order 
> of elements.
> In runtime ProjectArtifacts passed as LinkedHashSet already which is safe.
>  
> Possible fix is provided in comments section.



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