mapreducer

Company ABC is about to revise the salary of the employee. As a data analyst, you are given a task to analyse the employees' salary based on different department, then compare the average differences between each department a) Illustrate the architecture of MapReduce to count the average salary of all employees based on inputs in Figure 1. Dept A (HQ) Emp 1 RM5,000 Emp 2 RM4,000 Emp 3 RM12,000 Dept B (HQ) Emp 1 RM8,000 Emp 2 RM2,000 Emp 3 RM7,000 Dept A (Branch) Emp 4 RM12,000 Emp 5 RM7,000 Dept B (Branch) Emp4 RM8,000 Emp 5 RM2,000 Note: Emp = Employee Figure 1: Salary of employees (10 marks) b) Analyse the average salary for both departments in order to advise the top management on the salary revision (5 marks) C) Explain the function of mapper and reducer based on the given case. (5 marks) Company ABC is about to revise the salary of the employee. As a data analyst, you are given a task to analyse the employees' salary based on different department, then compare the average differences between each department a) Illustrate the architecture of MapReduce to count the average salary of all employees based on inputs in Figure 1. Dept A (HQ) Emp 1 RM5,000 Emp 2 RM4,000 Emp 3 RM12,000 Dept B (HQ) Emp 1 RM8,000 Emp 2 RM2,000 Emp 3 RM7,000 Dept A (Branch) Emp 4 RM12,000 Emp 5 RM7,000 Dept B (Branch) Emp4 RM8,000 Emp 5 RM2,000 Note: Emp = Employee Figure 1: Salary of employees (10 marks) b) Analyse the average salary for both departments in order to advise the top management on the salary revision (5 marks) C) Explain the function of mapper and reducer based on the given case