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Hbase Essentials

Hbase Essentials

By : Garg
3.5 (2)
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Hbase Essentials

Hbase Essentials

3.5 (2)
By: Garg

Overview of this book

This book is intended for developers and Big Data engineers who want to know all about HBase at a hands-on level. For in-depth understanding, it would be helpful to have a bit of familiarity with HDFS and MapReduce programming concepts with no prior experience with HBase or similar technologies. This book is also for Big Data enthusiasts and database developers who have worked with other NoSQL databases and now want to explore HBase as another futuristic, scalable database solution in the Big Data space.
Table of Contents (9 chapters)
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Preface
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
1. Introducing HBase
1. Introducing HBase
The world of Big Data
The origin of HBase
Use cases of HBase
Installing HBase
Understanding HBase cluster components
Summary
2
2. Defining the Schema
2. Defining the Schema
Data modeling in HBase
Designing tables
Accessing HBase
Summary
3
3. Advanced Data Modeling
3. Advanced Data Modeling
Understanding keys
HBase table scans
Implementing filters
Summary
4
4. The HBase Architecture
4. The HBase Architecture
Data storage
Data replication
Securing HBase
HBase and MapReduce
Summary
5
5. The HBase Advanced API
5. The HBase Advanced API
Counters
Coprocessors
The administrative API
Summary
6
6. HBase Clients
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6. HBase Clients
The HBase shell
Kundera – object mapper
REST clients
The Thrift client
The Hadoop ecosystem client
Summary
7
7. HBase Administration
7. HBase Administration
Cluster management
Cluster monitoring
Performance tuning
Troubleshooting
Summary
8
Index
Index

REST clients

HBase has a close relationship with Java. In the Java world, REST is a way to interact with objects over the Web. HBase provides the REST service that runs as a separate process and communicates with HBase. This REST service uses the same client API to access HBase.

Getting started

For a REST-based client to make a connection to an HBase cluster, first start the REST server on the HBase Master as follows:

[root@localhost bin]# hbase rest
...
usage: bin/hbase rest start [--infoport <arg>] [-p <arg>] [-ro]
    --infoport <arg>   Port for web UI
 -p,--port <arg>       Port to bind to [default: 8080]
 -ro,--readonly        Respond only to GET HTTP method requests [default:
                       false]

To run the REST server as a daemon, execute the following command:

bin/hbase-daemon.sh start|stop rest [--infoport <port>] [-p <port>] [-ro]

For example, launch the REST service, listening on port 9999 using the following command:

[root@localhost...

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