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Asynchronous HBase client for NodeJs using REST

branch: master
readme.md
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|   \ | |         | |        | |   | |____  \                  
| |\ \| | ___   __| |_____   | |___| |____)  )_____  ___ _____ 
| | \   |/ _ \ / _  | ___ |  |  ___  |  __  ((____ |/___) ___ |
| |  \  | |_| ( |_| | ____|  | |   | | |__)  ) ___ |___ | ____|
|_|   |_|\___/ \____|_____)  |_|   |_|______/\_____(___/|_____) New BSD License

Node HBase is a Node.JS client for the Apache HBase database. It use the Rest API (Stargate) to communicate with HBase. Currently, all the API is implemented and the data exchange format is JSON (but protocol buffer could follow).

Apache HBase is part of the Hadoop ecosystem. It describes itself as the Hadoop database optimized for random, realtime read/write access to big data. It is an open-source, distributed, versioned, column-oriented store modeled after Google' Bigtable.

Client features include:

  • Intuitive API following HBase naming conventions
  • Documentation and tests
  • Full Implementation of the REST API
  • Transparent encoding/decoding of values
  • Scanner and filter support

Installing

Via npm:

    npm install hbase

Quick example

This code create a new HBase instance, create a table and a column family, insert a few records and traverse them.

    var assert = require('assert');
    var hbase = require('hbase');

    hbase({ host: '127.0.0.1', port: 8080 })
    .getTable('my_table' )
    .create('my_column_family', function(err, success){
        this
        .getRow('my_row')
        .put('my_column_family:my_column', 'my value', function(err, success){
            this.get('my_column_family', function(err, cells){
                this.exists(function(err, exists){
                    assert.ok(exists);
                });
            });
        });
    });

Scanner Filters

It can be quite a pain to figure out what options can be sent with a scanner request. Marc Trudel has published a few examples here.

Running the tests

Tests are executed with expresso. To install it, simple use npm install -g expresso. Before running the tests the first time, copy the file "./test/properties.json.sample" to "./test/properties.json" and make the appropriate changes.

To run the tests

    expresso -s -t 100000

To instrument the tests

    expresso --cov -s -t 100000

Related projects

Contributors

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