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  • Book Overview & Buying Hbase Essentials
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Hbase Essentials

Hbase Essentials

By : Garg
3.5 (2)
Buy this Book
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Hbase Essentials

Hbase Essentials

3.5 (2)
By: Garg
Buy this Book

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
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Introducing HBase
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1. Introducing HBase
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The world of Big Data
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The origin of HBase
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Use cases of HBase
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Installing HBase
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Understanding HBase cluster components
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Summary
2
2. Defining the Schema
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2. Defining the Schema
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Data modeling in HBase
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Designing tables
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Accessing HBase
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Summary
3
3. Advanced Data Modeling
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3. Advanced Data Modeling
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Understanding keys
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HBase table scans
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Implementing filters
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Summary
4
4. The HBase Architecture
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4. The HBase Architecture
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Data storage
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Data replication
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Securing HBase
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HBase and MapReduce
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Summary
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5. The HBase Advanced API
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5. The HBase Advanced API
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Counters
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Coprocessors
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The administrative API
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Summary
6
6. HBase Clients
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6. HBase Clients
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The HBase shell
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Kundera – object mapper
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REST clients
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The Thrift client
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The Hadoop ecosystem client
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Summary
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7. HBase Administration
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7. HBase Administration
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Cluster management
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Cluster monitoring
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Performance tuning
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Troubleshooting
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Summary
8
Index
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Index

The HBase shell

The easiest way to access HBase is using the command-line interface called the HBase shell. The HBase shell is based on the Java Virtual Machine-based implementation of Ruby (JRuby) and can be used to connect to local or remote servers for interaction. It also provides both client and administrative operations. The HBase shell, the default HBase tool that comes with the HBase installation, can be launched as follows:

$HBASE_HOME/bin/hbase shell
HBase Shell; enter 'help<RETURN>' for list of supported commands.
Type "exit<RETURN>" to leave the HBase Shell
Version 0.96.2-hadoop2, r1581096, Mon Mar 24 16:03:18 PDT 2014
hbase(main):001:0>

To exit from the HBase shell, the exit or quit command is used as follows:

hbase(main):002:0> quit

Once the HBase shell is started, you can type in help, and then, click on Return to get the help text and the list of all the commands, as shown in the following screenshot:

Let's take a look at the various commands available with...

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Hbase Essentials
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