[MJAVADOC-494] javadoc:aggregate ignores repositories declared in sub-modules

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-M1
• Fix Version/s: 3.0.0
• Component/s: javadoc
• Labels: regression
• Environment: Maven Javadoc plugin 3.0.0-M1; Apache Maven 3.5.0; Java version 1.8.0_144
• Assignee: Robert Scholte
• Reporter: Martin Desruisseaux
• Created: 04/Sep/17 13:54
• Updated: 04/Nov/17 11:23
• Resolved: 04/Nov/17 11:16

Description

Given a multi-modules project with:

• A <repository>… URL A …</repository> element in the root pom.xml.
• Another <repository>… URL B …</repository> element in the pom.xml of a module, for downloading a JAR file used only by that specific module (we do that in order to depend only on Maven central for all modules except one).

Then:

• mvn install works: it download all JAR files as expected.
• mvn javadoc:javadoc also work with both Maven Javadoc plugin 2.10.4 and 3.0.0-M1.
• mvn javadoc:aggregate with Maven Javadoc plugin 2.10.4 works.
• mvn javadoc:aggregate with Maven Javadoc plugin 3.0.0-M1 fails.

Maven Javadoc plugin 3.0.0-M1 execution produces the following logs (simplified for brevity):

Downloading: URL A/.../MyArtifact.jar
Downloading: https://repo.maven.apache.org/maven2/.../MyArtifact.jar

No download attempt from URL B is reported, despite the <repository> declaration in a sub-module. Note that the JAR is present in my .m2/repository directory but is apparently ignored.

Downgrading Maven Javadoc plugin to 2.10.4 with everything else identical allows successful aggregated Javadoc generation.

Note: another user apparently has the same issue on stack overflow.