本书结合理论和实践，由浅入深，全方位介绍了Hadoop 这一高性能的海量数据处理和分析平台。全书5部分24 章，第Ⅰ部分介绍Hadoop 基础知识，第Ⅱ部分介绍MapReduce,第Ⅲ部分介绍Hadoop 的运维，第Ⅳ部分介绍Hadoop 相关开源项目，第Ⅴ部分提供了三个案例，分别来自医疗卫生信息技术服务商塞纳(Cerner)、微软的人工智能项目ADAM(一种大规模分布式深度学习框架)和开源项目Cascading(一个新的针对MapReduce 的数据处理API)。本书是一本专业、全面的Hadoop 参考书和工具书，阐述了Hadoop 生态圈的新发展和应用，程序员可以从中探索海量数据集的存储和分析，管理员可以从中了解Hadoop 集群的安装和运维。

Ready to unleash the power of your massive dataset? With the latest edition of this comprehensive resource, you'll learn how to use Apache Hadoop to build and maintain reliable, scalable, distributed systems. It's ideal for programmers looking to analyze datasets of any size, and for administrators who want to set up and run Hadoop clusters. This third edition covers recent changes to Hadoop, including new material on the new MapReduce API, as well as version 2 of the MapReduce runtime (YARN) and its more flexible execution model. You'll also find illuminating case studies that demonstrate how Hadoop is used to solve specific problems. * Store large datasets with the Hadoop Distributed File System (HDFS), then run distributed computations with MapReduce * Use Hadoop's data and I/O building blocks for compression, data integrity, serialization (including Avro), and persistence * Discover common pitfalls and advanced features for writing real-world MapReduce programs * Design, build, and administer a dedicated Hadoop cluster, or run Hadoop in the cloud * Use Pig, a high-level query language for large-scale data processing * Analyze datasets with Hive, Hadoop's data warehousing system * Load data from relational databases into HDFS, using Sqoop * Take advantage of HBase, the database for structured and semi-structured data * Use ZooKeeper, the toolkit for building distributed systems