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Learning Hbase

You're reading from   Learning Hbase Learn the fundamentals of HBase administration and development with the help of real-time scenarios

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Product type Paperback
Published in Nov 2014
Publisher
ISBN-13 9781783985944
Length 326 pages
Edition 1st Edition
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Author (1):
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Shashwat Shriparv Shashwat Shriparv
Author Profile Icon Shashwat Shriparv
Shashwat Shriparv
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Table of Contents (12) Chapters Close

Preface 1. Understanding the HBase Ecosystem FREE CHAPTER 2. Let's Begin with HBase 3. Let's Start Building It 4. Optimizing the HBase/Hadoop Cluster 5. The Storage, Structure Layout, and Data Model of HBase 6. HBase Cluster Maintenance and Troubleshooting 7. Scripting in HBase 8. Coding HBase in Java 9. Advance Coding in Java for HBase 10. HBase Use Cases Index

Data model operations


The operations that are the basic blocks of data model are Get, Put, Scan, and Delete, using which we can read, write, and delete records from an HBase table. We will discuss these operations in detail now.

Get

The Get operation can fetch certain records from an HBase table. It is similar to the select [fields] where RowKey=<Row Key value here> statement in relational databases, where we fetch a row from the table.

The following is the representation of Get:

public Result get(Get get)throws IOException

In the preceding code, the Get operation can be provided as a single get object out of a list of get objects as get(List<Get> gets). It is specified by Get in the HTableInterface interface given by HBase. The Get operation receives the get parameter, which objects the data that is to be fetched from the table. It returns data of the particular row, which is specified in the get object as an HBase Result object, and this throws IOException when not able to read...

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