Nos mandan la tercera parte de un artículo que trata sobre Hadoop (un framework para cómputo distribuido):
With configuration, installation, and the use of Hadoop in single-node and also the use in multi-node architectures under your belt, you can now turn to the task of developing applications within the Hadoop infrastructure. This article explores the Hadoop APIs and data flow and demonstrates their use with a simple mapper and reducer application.
La segunda parte esta aquí.