Tutorial about building multi-node Hadoop clusters. Deploy a large Hadoop cluster in Amazon EC2 learning how to manage and configure Hadoop. Learn to configure the NameNode, slaves, secondary NameNode, backup NameNode, and TaskTracker job and host memory management.

Accessing files with Java is easy. With this easy to follow tutorial you will learn how to perform basic file operations in Java. Reading, writing, appending, and random file access are covered. Along with an introduction to file locking.

Use SQLite to enhance applications. Learn to create and use SQLite databases. Create databases and write code to create tables, insert, update, and delete data. Also learn to query data and manage Cursors and transactions. Finally learn to read data from internal Android data sources including the bookmarks, call log etc.