counting missing values in input file

Mapreduce Program to calculate Missing Count 4

Use Case Description: This post describes an approach to use case scenario, where an input file contains some columns and its corresponding values as records. But some of these columns may have blanks/nulls instead of actual values. I.e. data is missing for some columns. And developer needs to write a Mapreduce Program to calculate missing count and percentage for each input column. Per suppose consider the below text files as […]