mvn error. You have to use a classifier to attach supplemental artifacts to the project instead of replacing them.

[alberttwong]

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  1.363 s
[INFO] Finished at: 2023-06-15T08:57:53-07:00
[INFO] ------------------------------------------------------------------------
[WARNING]
[WARNING] Plugin validation issues were detected in 5 plugin(s)
[WARNING]
[WARNING]  * org.apache.maven.plugins:maven-checkstyle-plugin:3.1.0
[WARNING]  * pl.project13.maven:git-commit-id-plugin:4.0.2
[WARNING]  * org.apache.maven.plugins:maven-compiler-plugin:3.10.1
[WARNING]  * org.apache.maven.plugins:maven-surefire-plugin:2.22.2
[WARNING]  * org.apache.maven.plugins:maven-resources-plugin:3.3.0
[WARNING]
[WARNING] For more or less details, use 'maven.plugin.validation' property with one of the values (case insensitive): [BRIEF, DEFAULT, VERBOSE]
[WARNING]
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-jar-plugin:3.3.0:jar (default) on project flink-connector-starrocks: You have to use a classifier to attach supplemental artifacts to the project instead of replacing them. -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

[alberttwong]

https://stackoverflow.com/questions/40964500/maven-jar-plugin-3-0-2-error-you-have-to-use-a-classifier-to-attach-supplementa.

So I changed in the pom.xml

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>jar</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <outputDirectory>./target/</outputDirectory>
                </configuration>
            </plugin>

to

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>test-jar</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <outputDirectory>./target/</outputDirectory>
                </configuration>
            </plugin>