Maven release plugin fails : source artifacts getting deployed twice

Question

We are using the maven release plugin on hudson and trying to automate the release process. The release:prepare works fine. When we try to do the release:perform , it fails

Answer 1

Maven plugins in parent and child poms should not have execution. As per standard convention, define all plugin with execution/goals in parent pom in plugin management section. Child pom should not redefine above details, but mention only the plugin (with artifactId, and version) that needs to be executed.

I had similar issue with maven-assembly-plugin with parent pom as below:

    
        
            
                maven-assembly-plugin
                2.6
                
                    
                        src/assembly/assembly.xml
                    
                
                
                    
                        package
                        
                            single
                        
                    
                
            
        
    

And Child pom had maven-assembly-plugin as below:

    
        
            maven-assembly-plugin
            2.2-beta-5
            
                xyz
                
                    src/assembly/assembly.xml
                
            
            
                
                    xyz-distribution
                    package
                    
                        single
                    
                
            
        
    

Removing the from child pom rectified the issue. The effective pom had 2 executions performed causing the duplicate install to Nexus repo.