The introduction of a Hadoop Version 2 has changed the way MapReduce applications run on a cluster. Unlike the monolithic MapReduce-Schedule in Hadoop Version 1, Hadoop YARN has generalized the cluster resources available to users. To ensure compatibility with Hadoop Version 1, the YARN team has written a MapReduce framework that works on top of YARN. The framework is highly compatible with Hadoop Version 1, with only a small number of issues to consider. As with Hadoop Version 1, Hadoop YARN includes virtually the same MapReduce examples and benchmarks that help demonstrate how Hadoop YARN functions.
Use the following resources to learn more about Running MapReduce on YARN: