Question

In order to understand mapreduce you need to have understanding of how data transformed

Answer 1

Answer:

Explanation:In order to write MapReduce applications you need to have an understanding of how data is transformed as it executes in the MapReduce framework. From start to finish, there are four fundamental transformations. Data is: Transformed from the input files and fed into the mappers.

From start to finish, there are four fundamental transformations. Data is:

Transformed from the input files and fed into the mappers

Transformed by the mappers

Sorted, merged, and presented to the reducer

Transform by reducers and written to output files