Database Reference
In-Depth Information
Chapter 2. HDFS and MapReduce
We now have a basic understanding of the Apache Hadoop architecture and its inner work-
ings. In this chapter, we will dive deeper into the two major components of Apache Ha-
doop—HDFS and MapReduce, and will cover the following topics:
• Essentials of Hadoop Distributed File System
• The read/write operational flow in HDFS
• Exploring HDFS commands
• Getting acquainted with MapReduce
