Cassandra 2.0 Up and running on Ubuntu 14.04

 Introduction

 Cassandra handles large amount of data  (Big Data)  across many    commodity  servers providing high availability  with  no single point of failure.

 Key features of Apache Cassandra

 1.) Decentralized so every node in the same cluster has the same role, therefore no single point of failure.
 2.) Supports replication and multi data center replication. 

 3.) Scalability.

 4.) Cassandra is highly available  and distributed.

 5.) High Performance.

 6.) Tunable consistency

 7.) NoSQL and Open source

 Setup Apache Cassandra 2.0 on Ubuntu 14.04

 

1.First check which version of Java is installed by running the following command in a terminal in ubuntu 14.04 .(Oracle JRE is recommended.)

java -version 

2.Add the DataStax Community repository to the aptitude repository source list file (/etc/apt/sources.list).

deb http://debian.datastax.com/community stable main 

3.Install curl in ubuntu 14.04 using,

sudo apt-get curl 

4.Add the DataStax repository key

curl -L http://debian.datastax.com/debian/repo_key | sudo apt-key add - 

5.Update ubutntu 14.04

sudo apt-get update

6.Install datastax community package

sudo apt-get install dsc20 

 Simple Cassandra Tutorial  (Cassandra Query Language)

create keyspace ScoreCard with replication = {'class':'SimpleStrategy', 'replication_factor':1};

select * from system.schema_keyspaces; 

 

use scorecard;

create table teamscorecard (teamname varchar ,teamid int , releasetimeuuid timeuuid,releaseid int ,actualid double ,actualgrowth double , PRIMARY KEY (teamname,teamid)); 
 
insert into teamscorecard (teamname, teamid , releasetimeuuid , releaseid , actualid , actualgrowth ) VALUES ('HE Portal', 100,now(),20,3.0,4.0);

select * from teamscorecard;