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https://issues.apache.org/jira/browse/MNG-7316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17640234#comment-17640234
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Michael Osipov commented on MNG-7316:
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[~gnodet], [~olamy], I want to roll back this change for 3.8.7 since the did
not properly define the behavior. My proposal is to add documentation for 3.9.0
that this list is immutable and in 3.8.7 no doc change, but revert. Then we can
think about how to make this better in the future.
> MavenProject.getAttachedArtifacts() regression with 3.8.1
> ---------------------------------------------------------
>
> Key: MNG-7316
> URL: https://issues.apache.org/jira/browse/MNG-7316
> Project: Maven
> Issue Type: Bug
> Components: Core
> Affects Versions: 3.8.2, 3.8.3
> Reporter: Gary D. Gregory
> Priority: Critical
> Fix For: waiting-for-feedback, wontfix-candidate
>
>
> The method {{MavenProject.getAttachedArtifacts()}} as of 3.8.2 breaks
> releasing components for us at Apache Commons using our Maven Release plugin
> because the list returned is now immutable, we now get an exception when
> calling {{remove()}} on the collection returned by the API; see
> [https://github.com/apache/commons-release-plugin/blob/master/src/main/java/org/apache/commons/release/plugin/mojos/CommonsDistributionDetachmentMojo.java#L137]
> This worked fine in 3.8.1, may you please change it back for 3.8.4?
> We cannot use Maven 3.8.2 and 3.8.3 to release our components.
> ([~michael-o]: Ironically, I discovered this trying to create a release
> candidate for Apache Commons CLI.)
> The exception in 3.8.3:
> {quote}Caused by: java.lang.UnsupportedOperationException
> at java.util.Collections$UnmodifiableCollection.remove
> (Collections.java:1060)
> at
> org.apache.commons.release.plugin.mojos.CommonsDistributionDetachmentMojo.execute
> (CommonsDistributionDetachmentMojo.java:136)
> at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
> (DefaultBuildPluginManager.java:137)
> {quote}
>
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