Dependency convergence error caused by maven-enforcer-plugin

Question

The following is the error I see, what confused me is that why it would depends on 2 versions of my-engine dependency. One is 0.9.0-20180510.015454-2 and another is 0.9.0-SNAPSHOT.

Heres's the command I use:

mvn clean install -DskipTests

In the pom.xml, I specify the version as ${project.version} which here should be 0.9.0-SNAPSHOT. Could you anyone help me ? Thanks

[INFO] --- maven-enforcer-plugin:1.3.1:enforce (enforce) @ zeppelin-server ---
[WARNING]
Dependency convergence error for org.apache.hadoop:hadoop-client:2.7.3 paths to dependency are:
+-myproject:my-server:0.9.0-SNAPSHOT
  +-myproject:my-engine:0.9.0-20180510.015454-2
    +-org.apache.hadoop:hadoop-client:2.7.3
and
+-myproject:my-server:0.9.0-SNAPSHOT
  +-myproject:my-engine:0.9.0-SNAPSHOT
    +-org.apache.hadoop:hadoop-client:2.7.5

Here's the dependency in pom.xml

  <dependency>
    <groupId>myproject</groupId>
    <artifactId>my-zengine</artifactId>
    <version>${project.version}</version>
    <classifier>tests</classifier>
    <scope>test</scope>
  </dependency>

<dependency>
  <groupId>${project.groupId}</groupId>
  <artifactId>my-zengine</artifactId>
  <version>${project.version}</version>
</dependency>

Answer 1

You could fix this in one of two ways, either choose to ignore it

mvn clean install -Denforcer.fail=false

or add both wildcard exclusion and exclusion for every dependency that caused the enforcer in the first place as follows.

<dependency>
<groupId>org.apache.maven.plugin-tools</groupId>
<artifactId>maven-plugin-tools-api</artifactId>
<version>2.5.1</version>
<exclusions>
    <exclusion>
        <groupId>*</groupId>
        <artifactId>*</artifactId>
    </exclusion>
    <exclusion>
        <groupId>org.apache.hadoop</groupId>
        <artifactId>hadoop-client</artifactId>
    </exclusion>
</exclusions>