Reg loading of hdfs file to Cassandra

[Thamizh]

Hi,
I am newbie to Cassandra. I wanted to load a file present on HDFS to Cassandra 
using M/R program.
I am using Cassandra 0.8.2 and Hadoop-0.20.2. 
Kindly share me, Is there a document Or sample code available for this? 
Regards,
Thamizh