How to control the number of mappers required for a Hive query

This article explains how to increase or decrease the number of mappers required for a particular Hive query. Setting both “mapreduce.input.fileinputformat.split.maxsize” and “mapreduce.input.fileinputformat.split.minsize” to the same value in most cases will be able to control the number of mappers (either increase or decrease) used when Hive is running a particular …