• Input
– Text files
• Output
– Single file containing (Word Count)
• Map Phase
– Generates (Word, Count) pairs
– [{a,1}, {b,1}, {a,1}] [{a,2}, {b,3}, {c,5}] [{a,3}, {b,1}, {c,1}]
• Reduce Phase
– For each word, calculates aggregate
– [{a,7}, {b,5}, {c,6}]
BarCamp Chennai - 5 Mohit Soni
Word Count Example