Map-reduce Create .JAR file and Step by Step execution of program .

This blog is meant for individuals who are non-Java professionals and for whom creating a .Jar file and executing them as Hadoop program is a big challenge .

Assumptions :
1.   Eclipse is already installed on the machine .
2.   Hadoop already installed or a VM is already available .
3.   WinSCP already installed .


Step 0: Most importantly , please note that the version of Java installed on the LINUX/UBUNTU server
should be same as the ECLIPSE version where you are creating the .JAR.

Execute the below steps one by One 

Step 1 :  Right Click on the folder and click "Export"

Step 2 :   click on JAR file as shown below .

Step 3:   click on the check box as shown . Give a Jar file name and click "Finish"

Step 4:   COPY AND PASTE THE SAME IN THE LINUX SERVER

Step 5:   Execute the wordcount.jar using the below steps 

hadoop jar wordcount.jar inverika.training.examples.WordCount /user/root/data/input /user/root/data/output7

Please note that :

wordcount.Jat                                      =     Name of the jar file .

inverika.training.examples.WordCount  =     Package Name(dot) Class Name

Step 6 : Add all the .Jar that are needed to make your program error free