[jira] [Created] (MDEP-750) 2.10:tree -Dverbose shows "for duplicate" where "for conflict" is expected

["Atsushi Nakagawa (Jira)" <ji...@apache.org>]

Atsushi Nakagawa created MDEP-750:
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             Summary: 2.10:tree -Dverbose shows "for duplicate" where "for conflict" is expected
                 Key: MDEP-750
                 URL: https://issues.apache.org/jira/browse/MDEP-750
             Project: Maven Dependency Plugin
          Issue Type: Bug
          Components: tree
    Affects Versions: 2.10
         Environment: Apache Maven 3.8.1 (05c21c65bdfed0f71a2f2ada8b84da59348c4c5d)
Java version: 1.8.0_201, vendor: Oracle Corporation, runtime: C:\Program Files\Java\jdk1.8.0_201\jre
OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"
            Reporter: Atsushi Nakagawa
         Attachments: pom.xml, tree-verbose.txt

I'm not sure what the support status of 2.10 is but here goes.  At the least maybe this is a documentation issue and {{-Dverbose}} should just be taken with a grain of salt, or perhaps this is a test case for any future implementations.

In brief:
Running {{mvn -B org.apache.maven.plugins:maven-dependency-plugin:2.10:tree -Dverbose}} shows "omitted for duplicate" where "omitted for conflict" is expected.

 I have attached a minimum pom.xml for reproducing the issue and the output from running the above command.  (Output shows a warning regarding inconsistencies between Maven 2 vs 3 but I'm presuming this is an issue regardless that pertains to version 2.)

Points of note:
 * These two lines are contradictory because it shows 2.10.3 as the version used for "jackson-databind" but no conflict message is emitted when it tramples 2.12.3:
 ** com.fasterxml.jackson.core:jackson-databind:jar:2.10.3:compile
 ** (com.fasterxml.jackson.core:jackson-databind:jar:2.12.3:compile - omitted for duplicate)
 * Hierarchy printout shows "com.fasterxml.jackson.core:jackson-databind:jar:2.10.3:compile" as a dependency of "software.amazon.awssdk:sdk-core:jar:2.16.62:compile" but the pom for the former actually depends on version 2.12.3.

Other noteworthy points:
 * "jackson-databind:jar:2.12.3" is three plus levels deep (via sts) while 2.10.3 is two (via java-jwt) so 2.10.3 wins by nearest-wins.  The issue is only with the conflict message printout.

 



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