This project is a collection of Maven archetype templates. That is, the projects are intended to be read by the maven-archetype-plugin to produce an archetype.

Archetypes are published to Cloudera's Maven repository at

You can create a template MapReduce executable jar using the mapred-driver-archetype.

Here's how you do it (you'll need a recent version of Maven installed):

$ mvn archetype:generate -DarchetypeCatalog=http://repository.cloudera.com/archetype-catalog.xml
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> maven-archetype-plugin:2.0:generate (default-cli) @ standalone-pom >>>
[INFO]
[INFO] <<< maven-archetype-plugin:2.0:generate (default-cli) @ standalone-pom <<<
[INFO]
[INFO] --- maven-archetype-plugin:2.0:generate (default-cli) @ standalone-pom ---
[INFO] Generating project in Interactive mode
[INFO] No archetype defined. Using maven-archetype-quickstart (org.apache.maven.archetypes:maven-archetype-quickstart:1.0)
Choose archetype:
1: http://repository.cloudera.com/archetype-catalog.xml -> mapred-driver-archetype (mapred-driver-archetype)
Choose a number: : 1
Define value for property 'groupId': : foo
Define value for property 'artifactId': : foo
Define value for property 'version':  1.0-SNAPSHOT: : <enter>
Define value for property 'package':  foo: : <enter>
Confirm properties configuration:
groupId: foo
artifactId: foo
version: 1.0-SNAPSHOT
package: foo
 Y: : <enter>
 [INFO] ------------------------------------------------------------------------
 [INFO] BUILD SUCCESS
 [INFO] ------------------------------------------------------------------------
 [INFO] Total time: 10.501s
 [INFO] Finished at: Wed Apr 27 22:20:16 EDT 2011
 [INFO] Final Memory: 7M/81M
 [INFO] ------------------------------------------------------------------------

Now you've got a Maven-based Hadoop MapReduce project that links to CDH3 artifacts.

$ cd foo
$ mvn package
$ hadoop jar target/foo-1.0-SNAPSHOT-driver.jar

$ mvn test

$ mvn eclipse:eclipse -DdownloadSources

Then, in Eclipse, go: Import... > Existing Projects... > select the 'foo' directory (or parent thereof) > done! The nice thing about using Maven here is that it links the sources for you.