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From "Karl Heinz Marbaise (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MJAR-242) When building an empty project with mvn clean install deploy it will fail because it executes maven-jar-plugin twice with "have to use classifier" error.
Date Tue, 05 Dec 2017 19:44:00 GMT

    [ https://issues.apache.org/jira/browse/MJAR-242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16279110#comment-16279110
] 

Karl Heinz Marbaise commented on MJAR-242:
------------------------------------------

If you really call {{mvn clean install deploy}} the usage of {{install}} is superfluous cause
the life cycle includes the {{install}} parts which means {{mvn clean deploy}} is sufficient.
The problem here is located based on the repeating of the {{install}} phase which will call
the {{maven-jar-plugin}} a second time which will cause the resulting error message. 

> When building an empty project with mvn clean install deploy it will fail because it
executes maven-jar-plugin twice with "have to use classifier" error.
> ---------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: MJAR-242
>                 URL: https://issues.apache.org/jira/browse/MJAR-242
>             Project: Maven JAR Plugin
>          Issue Type: Bug
>    Affects Versions: 3.0.0
>         Environment: Windows 10 x64
> Apache Maven 3.3.1 (cab6659f9874fa96462afef40fcf6bc033d58c1c; 2015-03-13T16:10:27-04:00)
> Java version: 1.8.0_131, vendor: Oracle Corporation
> Java home: C:\Program Files\Java\jdk1.8.0_131\jre
> Default locale: en_US, platform encoding: Cp1252
> OS name: "windows 10", version: "10.0", arch: "amd64", family: "dos"
>            Reporter: Daniel Cruver
>            Priority: Minor
>         Attachments: empty-project-build.log, pom.xml
>
>
> This issues should never happen because who has empty projects, well our project had
a few, so I ran across this issue when running mvn clean install.
> "You have to use a classifier to attach supplemental artifacts to the project instead
of replacing"
> I have attached the build log and an example pom that can reproduce the error, assuming
you updated the distributionManagement section with an actual Maven Repository.



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