For two input files, that is, file F1 and file F2, please write MapReduce program, merge two files, and eliminate duplicate contents, get a new output file. The following is a sample of the input file and the output file for reference

Filename	Size	Update
f1.txt	70	2017-11-26
f2.txt	58	2017-11-26
MapReduce.html	1491415	2018-01-20

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