Maven build [WARNING] we have a duplicate class

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Take a look at the “Dependency Exclusions” section in the Maven doc.

In your provided example, I’ll exclude the commons-logging:commons-logging-api:jar:1.0.4:compile dependency from org.apache.hadoop.hive:hive-common:jar:0.7.1-cdh3u3:compile. In your pom.xml :

    <dependency>
        <groupId>org.apache.hadoop.hive</groupId>
        <artifactId>hive-common:jar</artifactId>
        <version>0.7.1-cdh3u3</version>
        <exclusions>
            <exclusion>
                <groupId>commons-logging</groupId>
                <artifactId>commons-logging-api</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

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