Unknown host exception nexus.codehaus.org in maven build

Question

I am building the Apache Ignite project http://github.com/apache/ignite .

One of the maven pom.xml refers to the codehaus exec-maven-plugin . Note that codehaus is now defunct as a company .

Is there something in the plugin itself that links to the http://nexus.codehaus.org repository? Consider the error message from running

 mvn clean package 

on that project:

[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-
plugin:1.3.2:java (default) on project ignite-core: Execution 
default of goal org.codehaus.mojo:exec-maven-plugin:1.3.2:java failed:
 Plugin org.codehaus.mojo:exec-maven-plugin:1.3.2 or one of its 
dependencies could not be resolved: Could not transfer artifact
 org.apache.ignite:ignite-tools:jar:1.4.1-SNAPSHOT from/to 
codehaus-snapshots (http://nexus.codehaus.org/snapshots/):
 nexus.codehaus.org: Unknown host nexus.codehaus.org -> [Help 1]

Here is the snippet of pom.xml:

        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>build-helper-maven-plugin</artifactId>
            <version>1.9.1</version>
            <executions>
                <execution>
                    <id>add-sources</id>
                    <phase>generate-sources</phase>
                    <goals>
                        <goal>add-source</goal>
                    </goals>
                    <configuration>
                        <sources>
                            <source>schema-import/src/main/java</source>
                        </sources>
                    </configuration>
                </execution>
            </executions>
        </plugin>

Note: I am not all certain that the error were due to the codehaus mojo plugin. It is simply here noted given that were the only reference to codehaus in the project.

Answer 1

The Codehaus has shutdown it's doors. The new home of the plugins is: http://www.mojohaus.org/ . And in particular for the exec-maven-plugin . The source code can be found: https://github.com/mojohaus/exec-maven-plugin/ . Apart from that a project referencing a SNAPSHOT repository is simply wrong. Is the codehaus repository referenced in your pom or in the ignite project?

Answer 2

I found this question years after the fact but I actually have an answer. Use a newer (most recent perhaps) version of the plugin.

The old versions of the plugins are hard-coded to look for the http://snapshots.repository.codehaus.org . If you upgrade to a new version you should be ok.

Works for build-helper-maven-plugin and for exec-maven-plugin .

Old:

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>build-helper-maven-plugin</artifactId>
    <version>1.9.1</version>
</plugin>
<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>exec-maven-plugin</artifactId>
    <version>1.2.1</version>
</plugin>

New:

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>build-helper-maven-plugin</artifactId>
    <version>3.0.0</version>
</plugin>
<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>exec-maven-plugin</artifactId>
    <version>1.6.0</version>
</plugin>