I am very new to the bigdata world. I have around 16 tables that needs to be grouped and a report needs to be sent to another system.
The below is an example.Require guidence/help for this task
empno first-name last-name
0 fname lname
1 fname1 lname1
empno dept-no dept-code
empno history-no address
I have to generate a file combining all the tables for each employee, and the average emp-count is 200k