Hadoop Tutorial for Beginners - 11 MapReduce WordCount Program Example

Word Count(WC) Flow chart, WC Driver Class, WC Mapper Class, WC Reducer class and Execute first MapReduce program

[chanakakarunaratne]

Great video. i have a small doubt. is the mapper and reducer classes are called automatically by the program? we do not need to explicitly call these like we do in java programs by calling other classes?
Thanks