hbase-ruby is a pure ruby client for HBase (http://hadoop.apache.org/hbase). It works with the most recent version of HBase REST interface.
- “hbase-0.20dev version”: http://github.com/sishen/hbase-ruby/tree/master
- “hbase-0.19 version”: http://github.com/sishen/hbase-ruby/tree/hbase-0.19
$gem sources -a http://gems.github.com
$gem install sishen-hbase-ruby
For those who wants to use hbase in their rails application, can add this line to the environment.rb:
config.gem ‘sishen-hbase-ruby’, :lib => “hbase”, :source => “http://gems.github.com”
To build the gem yourself:
$rake gem
First download the recent version of hbase (svn checkout http://svn.apache.org/repos/asf/hadoop/hbase/trunk hbase), compile it with ‘ant’, then launch HBase server:
$bin/start-hbase.sh
Here is the example:
require 'hbase'
client = HBase::Client.new("http://localhost:60010/api") # this url is the default.
# Table Operation
tables = client.list_tables # list available tables
table = client.create_table('users', 'habbit') # create a table whose column_family is habbit
table = client.show_table('users') # show the meta info of table users
client.disable_table('users') # disable table users
client.enable_table('users') # enable table users
client.delete_table('users') # delete table users
# Row Operation
row = client.show_row('users', 'sishen') # show the data of row 'sishen' in table 'users'
row2 = client.create_row('users', 'sishen', Time.now.to_i, {:name => 'habbit:football', :value => 'i like football'}) # create the row 'sishen' with the data in the table 'users'
client.delete_row('users', 'sishen', nil, 'habbit:football') # delete the row 'sishen' of table 'users' with the optional column 'habbit:football'
# Scanner Operation
scanner = client.open_scanner('users', 'habbit:')
rows = client.get_rows(scanner)
client.close_scanner(scanner)
First you want to install rspec gem:
sudo gem install rspec
Now, you can run the spec by following rake task:
rake hbase
Copyright © 2008 Dingding Ye <yedingding@gmail.com>
Distributed under MIT License