Foreword
A pache Hadoop 2 and the upcoming 3 were a major step forward in moving beyond the paradigm of MapReduce. At the core of this is the new YARN (Yet Another Resource Negotiator) processing framework for creating APIs and processing engines on top of Hadoop and HDFS, including the original MapReduce paradigm. Hadoop 2 is a significant upgrade to Hadoop 1, requiring updates to how a cluster is set up, managed and administered. This book provides everything a developer, operator or administrator would need to manage a production Hadoop 2 cluster of any size.
While Hadoop 2 and 3 at the core are HDFS and YARN, there are many other projects that are included in a typical production Hadoop cluster. For example, Hive, Pig, Spark, Flume and Kafka ...
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