Published by Addison-Wesley (October 28, 2015) © 2016
Douglas EadlineProduct Information
Get Started Fast with Apache Hadoop® 2, YARN, and Today’s Hadoop Ecosystem
With Hadoop 2.x and YARN, Hadoop moves beyond MapReduce to become practical for virtually any type of data processing. Hadoop 2.x and the Data Lake concept represent a radical shift away from conventional approaches to data usage and storage. Hadoop 2.x installations offer unmatched scalability and breakthrough extensibility that supports new and existing Big Data analytics processing methods and models.
Hadoop® 2 Quick-Start Guide is the first easy, accessible guide to Apache Hadoop 2.x, YARN, and the modern Hadoop ecosystem. Building on his unsurpassed experience teaching Hadoop and Big Data, author Douglas Eadline covers all the basics you need to know to install and use Hadoop 2 on personal computers or servers, and to navigate the powerful technologies that complement it.
Eadline concisely introduces and explains every key Hadoop 2 concept, tool, and service, illustrating each with a simple “beginning-to-end” example and identifying trustworthy, up-to-date resources for learning more.
This guide is ideal if you want to learn about Hadoop 2 without getting mired in technical details. Douglas Eadline will bring you up to speed quickly, whether you’re a user, admin, devops specialist, programmer, architect, analyst, or data scientist.
Coverage Includes
- Understanding what Hadoop 2 and YARN do, and how they improve on Hadoop 1 with MapReduce
- Understanding Hadoop-based Data Lakes versus RDBMS Data Warehouses
- Installing Hadoop 2 and core services on Linux machines, virtualized sandboxes, or clusters
- Exploring the Hadoop Distributed File System (HDFS)
- Understanding the essentials of MapReduce and YARN application programming
- Simplifying programming and data movement with Apache Pig, Hive, Sqoop, Flume, Oozie, and HBase
- Observing application progress, controlling jobs, and managing workflows
- Managing Hadoop efficiently with Apache Ambari–including recipes for HDFS to NFSv3 gateway, HDFS snapshots, and YARN configuration
- Learning basic Hadoop 2 troubleshooting, and installing Apache Hue and Apache Spark
Foreword xi
Preface xiii
Acknowledgments xix
About the Author xxi
Chapter 1: Background and Concepts 1
Defining Apache Hadoop 1
A Brief History of Apache Hadoop 3
Defining Big Data 4
Hadoop as a Data Lake 5
Using Hadoop: Administrator, User, or Both 6
First There Was MapReduce 7
Moving Beyond MapReduce with Hadoop V2 13
The Apache Hadoop Project Ecosystem 15
Summary and Additional Resources 18
Chapter 2: Installation Recipes 19
Core Hadoop Services 19
Planning Your Resources 21
Installing on a Desktop or Laptop 23
Installing Hadoop with Ambari 40
Installing Hadoop in the Cloud Using Apache Whirr 56
Summary and Additional Resources 62
Chapter 3: Hadoop Distributed File System Basics 63
Hadoop Distributed File System Design Features 63
HDFS Components 64
HDFS User Commands 72
HDFS Web GUI 77
Using HDFS in Programs 77
Summary and Additional Resources 83
Chapter 4: Running Example Programs and Benchmarks 85
Running MapReduce Examples 85
Running Basic Hadoop Benchmarks 95
Summary and Additional Resources 98
Chapter 5: Hadoop MapReduce Framework 101
The MapReduce Model 101
MapReduce Parallel Data Flow 104
Fault Tolerance and Speculative Execution 107
Summary and Additional Resources 109
Chapter 6: MapReduce Programming 111
Compiling and Running the Hadoop WordCount Example 111
Using the Streaming Interface 116
Using the Pipes Interface 119
Compiling and Running the Hadoop Grep Chaining Example 121
Debugging MapReduce 124
Summary and Additional Resources 128
Chapter 7: Essential Hadoop Tools 131
Using Apache Pig 131
Using Apache Hive 134
Using Apache Sqoop to Acquire Relational Data 139
Using Apache Flume to Acquire Data Streams 148
Manage Hadoop Workflows with Apache Oozie 154
Using Apache HBase 163
Summary and Additional Resources 169
Chapter 8: Hadoop YARN Applications 171
YARN Distributed-Shell 171
Using the YARN Distributed-Shell 172
Structure of YARN Applications 178
YARN Application Frameworks 179
Summary and Additional Resources 184
Chapter 9: Managing Hadoop with Apache Ambari 185
Quick Tour of Apache Ambari 186
Managing Hadoop Services 194
Changing Hadoop Properties 198
Summary and Additional Resources 204
Chapter 10: Basic Hadoop Administration Procedures 205
Basic Hadoop YARN Administration 206
Basic HDFS Administration 208
Capacity Scheduler Background 220
Hadoop Version 2 MapReduce Compatibility 222
Summary and Additional Resources 225
Appendix A: Book Webpage and Code Download 227
Appendix B: Getting Started Flowchart and Troubleshooting Guide 229
Getting Started Flowchart 229
General Hadoop Troubleshooting Guide 229
Appendix C: Summary of Apache Hadoop Resources by Topic 243
General Hadoop Information 243
Hadoop Installation Recipes 243
HDFS 244
Examples 244
MapReduce 245
MapReduce Programming 245
Essential Tools 245
YARN Application Frameworks 246
Ambari Administration 246
Basic Hadoop Administration 247
Appendix D: Installing the Hue Hadoop GUI 249
Hue Installation 249
Starting Hue 253
Hue User Interface 253
Appendix E: Installing Apache Spark 257
Spark Installation on a Cluster 257
Starting Spark across the Cluster 258
Installing and Starting Spark on the Pseudo-distributed Single-Node Installation 260
Run Spark Examples 260
Index 261