M2E: Version is duplicate of parent version - Why is this a warning?

eclipse maven pom.xml m2e parent-pom
Doug Moscrop picture Doug Moscrop · Nov 24, 2011 · Viewed 27.3k times · Source

I have several Maven projects that each have some common functionality or at least common configuration/dependencies. I extracted this in to a common pom.xml, and then modularlized several facets, for example persistence, Spring related dependencies, and so on - all in their own modules which inherit from this parent POM.

Right now, "Common" is version 1.0.0 and I have "ProjectA" that I wish to inherit from it. I receive the warning:

Version is duplicate of parent version

I don't fully understand why this is a warning. I thought I had the option of omitting the version from my project POM in order to inherit the version. (I do this for common modules - for example, common-spring adds additional common dependencies for Spring apps, and in fact, ProjectA actually inherits from common-spring.)

Isn't it just that - an option? If I change my ProjectA version to 1.0.1 or 2.0.0 all is well.

Answer

Duncan Jones picture Duncan Jones · Oct 3, 2012

Newer versions of m2e (since 1.1) now allow you to disable this warning.

Preferences > Maven > Warnings > Disable "Version is duplicate of parent version" warning

Original bug report: https://bugs.eclipse.org/bugs/show_bug.cgi?id=356796

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