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  Professional Hadoop Solutions
 

Professional Hadoop Solutions

by Boris Lublinsky, Kevin T. Smith

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  This book is a practical guide to building solutions with Apache Hadoop. Unlike most books on the subject that are ""a mile wide and an inch deep"", this book provides a deeper, code-level dive that shows how to use Hadoop technologies, in concert, to deliver real-world solutions. The authors provide in-depth code examples in Java and XML from applications that they have successfully built and deployed.

Topics include:
Storing data with HDFS and Hbase
Processing data with MapReduce and other technologies
Automating data processing with Oozie
Delivering real-time solutions with Hadoop
Hadoop security
Running Hadoop with Amazon Web Services
And more.

The authors explain not just ""how it works"", but the when and why behind using these tools effectively. For example, they describe best practices for storing data and for calculations; customizing how data is read and executed; automating Hadoop processes in real-time; and building secure enterprise solutions that protect the company`s investment without sacrificing availability. The book also covers recent additions to the Hadoop ecosystem, including multiple namespaces and MapReduce2. Not only does this book cover the use of the APIs that various Hadoop systems are exposing, but exposes their inner workings, allowing architects and developers to better leverage and customize them.

Introduction

Chapter 1: Big Data and the Hadoop Ecosystem
Big Data Meets Hadoop
Hadoop: Meeting the Big Data Challenge
Data Science in the Business World
The Hadoop Ecosystem
Hadoop Core Components
Hadoop Distributions
Developing Enterprise Applications with Hadoop
Summary

Chapter 2: Storing Data in Hadoop
HDFS
HDFS Architecture
Using HDFS Files
Hadoop-Specific File Types
HDFS Federation and High Availability
HBase
HBase Architecture
HBase Schema Design
Programming for HBase
New HBase Features
Combining HDFS and HBase for Effective Data Storage
Using Apache Avro
Managing Metadata with HCatalog
Choosing an Appropriate Hadoop Data Organization for Your Applications
Summary

Chapter 3: Processing Your Data with MapReduce
Getting to Know MapReduce
MapReduce Execution Pipeline
Runtime Coordination and Task Management in MapReduce
Your First MapReduce Application
Building and Executing MapReduce Programs
Designing MapReduce Implementations
Using MapReduce as a Framework for Parallel Processing
Simple Data Processing with MapReduce
Building Joins with MapReduce
Building Iterative MapReduce Applications
To MapReduce or Not to MapReduce?
Common MapReduce Design Gotchas
Summary

Chapter 4: Customizing MapReduce Execution
Controlling MapReduce Execution with InputFormat
Implementing InputFormat for Compute-Intensive Applications
Implementing InputFormat to Control the Number of Maps
Implementing InputFormat for Multiple HBase Tables
Reading Data Your Way with Custom RecordReaders
Implementing a Queue-Based RecordReader
Implementing RecordReader for XML Data
Organizing Output Data with Custom Output Formats
Implementing OutputFormat for Splitting MapReduce
Job`s Output into Multiple Directories
Writing Data Your Way with Custom RecordWriters
Implementing a RecordWriter to Produce Outputtar Files
Optimizing Your MapReduce Execution with a Combiner
Controlling Reducer Execution with Partitioners
Implementing a Custom Partitioner for One-to-Many Joins
Using Non-Java Code with Hadoop
Pipes
Hadoop Streaming
Using JNI
Summary

Chapter 5: Building Reliable MapReduce Apps
Unit Testing MapReduce Applications
Testing Mappers
Testing Reducers
Integration Testing
Local Application Testing with Eclipse
Using Logging for Hadoop Testing
Processing Applications Logs
Reporting Metrics with Job Counters
Defensive Programming in MapReduce
Summary

Chapter 6: Automating Data Processing with Oozie
Getting to Know Oozie
Oozie Workflow
Executing Asynchronous Activities in Oozie Workflow
Oozie Recovery Capabilities
Oozie Workflow Job Life Cycle
Oozie Coordinator
Oozie Bundle
Oozie Parameterization with Expression Language
Workflow Functions
Coordinator Functions
Bundle Functions
Other EL Functions
Oozie Job Execution Model
Accessing Oozie
Oozie SLA
Summary

Chapter 7: Using Oozie
Validating Information about Places Using Probes
Designing Place Validation Based on Probes
Designing Oozie Workflows
Implementing Oozie Workflow Applications
Implementing the Data Preparation Workflow
Implementing Attendance Index and Cluster Strands
Workflows
Implementing Workflow Activities
Populating the Execution Context from a java Action
Using MapReduce Jobs in Oozie Workflows
Implementing Oozie Coordinator Applications
Implementing Oozie Bundle Applications
Deploying, Testing, and Executing Oozie Applications
Deploying Oozie Applications
Using the Oozie CLI for Execution of an Oozie Application
Passing Arguments to Oozie Jobs
Using the Oozie Console to Get Information about Oozie
Applications
Getting to Know the Oozie Console Screens
Getting Information about a Coordinator Job
Summary

Chapter 8: Advanced Oozie Features
Building Custom Oozie Workflow Actions
Implementing a Custom Oozie Workflow Action
Deploying Oozie Custom Workflow Actions
Adding Dynamic Execution to Oozie Workflows
Overall Implementation Approach
A Machine Learning Model, Parameters, and Algorithm
Defining a Workflow for an Iterative Process
Dynamic Workflow Generation
Using the Oozie Java API
Using Uber Jars with Oozie Applications
Data Ingestion Conveyer
Summary

Chapter 9: Real-Time Hadoop
Real-Time Applications in the Real World
Using HBase for Implementing Real-Time ApplicationsISBN - 9788126551071
 


Pages : 504
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