Given two SVN repos that are configured in the job:

• Repository URL: svn+ssh://svn@svn.acme.com/repos/foo
• Repository URL: svn+ssh://svn@svn.acme.com/repos/bar

and an aggregator pom in foo, building modules from different repos:

    <modules>
        <module>foo-submodule</module>
        <module>../bar</module>
    </modules>

If there is a commit affecting bar only the root aggregator module will be built and not the bar module.

Workaround (sort of): add the bar module (-pl ../bar) to Goals and options box, to have it always built.