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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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Toc

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

Scripting in HBase


We have seen how to do scripting in HBase. In this chapter, we will see some more scripting tips and tricks, which will enable an administrator to perform various tasks in HBase by automating. We can write scripts in Ruby, shell script, and a script that's a combination of HBase commands.

Now, let's consider a case where we need to create a table with two column families and two columns, and then insert some data. The script for the same is as follows:

Tip

Here, we used a vi editor. Users can use any editor of his/her preference.

vi hbasescript.script

create 'table','data',
for i in '0'..'2' do 
for j in '0'..'2' do 
for k in '0'..'2' do 
put 'table', "row-#{i}#{j}#{k}","data:column#{j}#{k}", "name#{j}#{k}" end end end

After saving this script, we can run the following script:

hbase shell hbasescript.script

We can also do the same thing by going to HBase shell:

hbase > for i in '0'..'5' do \
hbase >* put "utable", "rowKey_#{i}", "address:address", "address#{i}"\
hbase...
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