The sample applications have been moved into their own repository so they can be developed independently of the Spring for Apache Hadoop release cycle. They can be found on GitHub https://github.com/spring-projects/spring-hadoop-samples/.

We also keep a numerous Spring IO getting started guides up to date with a latest GA release at https://spring.io/guides?filter=yarn.

The wiki page for the Spring for Apache Hadoop project has more documentation for building and running the examples and there is also some instructions in the README file of each example.