Warnings right after startup

unknown

just by default log4j I believe, right after a startup (fresh database, fresh folder, fresh log)  , I can see the following 5 WARN , so wonder how to cope with them:

not good sign or not a big deal ? 

2017-12-18 12:51:23,558 JIRA-Bootstrap WARN [c.a.p.osgi.util.OsgiHeaderUtil] removing duplicate import package com.atlassian.jira.blueprint.api~ for plugin com.atlassian.jira-core-project-templates - it is likely that a duplicate package was supplied in the OSGi instructions in the plugin's MANIFEST.MF
2017-12-18 12:51:23,558 JIRA-Bootstrap WARN [c.a.p.osgi.util.OsgiHeaderUtil] removing duplicate import package com.atlassian.jira.projects.shortcuts~ for plugin com.atlassian.jira-core-project-templates - it is likely that a duplicate package was supplied in the OSGi instructions in the plugin's MANIFEST.MF
2017-12-18 12:54:53,587 JIRA-Bootstrap WARN [c.a.p.osgi.util.OsgiHeaderUtil] removing duplicate import package com.atlassian.webresource.api.data~ for plugin com.pyxis.greenhopper.jira - it is likely that a duplicate package was supplied in the OSGi instructions in the plugin's MANIFEST.MF
2017-12-18 12:56:39,817 ThreadPoolAsyncTaskExecutor::Thread 21 WARN [o.s.b.factory.support.DefaultListableBeanFactory] Overriding user-defined bean definition for bean 'velocityRequestContextFactory' with a framework-generated bean definition: replacing [Generic bean: class [com.atlassian.plugin.osgi.bridge.external.HostComponentFactoryBean]; scope=; abstract=false; lazyInit=true; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null; defined in URL [bundle://171.0:0/META-INF/spring/atlassian-plugins-host-components.xml]] with [Generic bean: class [org.eclipse.gemini.blueprint.service.importer.support.OsgiServiceProxyFactoryBean]; scope=; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null]
2017-12-18 12:56:39,833 ThreadPoolAsyncTaskExecutor::Thread 21 WARN [o.s.b.factory.support.DefaultListableBeanFactory] Overriding user-defined bean definition for bean 'simpleLinkManager' with a framework-generated bean definition: replacing [Generic bean: class [com.atlassian.plugin.osgi.bridge.external.HostComponentFactoryBean]; scope=; abstract=false; lazyInit=true; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null; defined in URL [bundle://171.0:0/META-INF/spring/atlassian-plugins-host-components.xml]] with [Generic bean: class [org.eclipse.gemini.blueprint.service.importer.support.OsgiServiceProxyFactoryBean]; scope=; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null]

Andy Heinzer

I do not believe these warnings are anything to be concerned about.  These can happen when one or more plugins (possibly system plugins) are referring to packages by the same name.  

Now if you install some new plugin, and it generates this kind of warning, and then in turn you find it is not working as expected, then there is potentially a problem in regards to say the version of the package this plugin is looking for versus the version of this package that is being used by the other plugin.   But even then, this warning alone is not enough by itself to indicate that there is a problem here.