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Good ones to explain the concept of map and reduce but too easy even for the basic level.
Waiting for support of JAVA for MR job
I agree that it would be interesting to have java support. In the meantime I think it's worth to give it a try since it's not too difficult.
When I copy the sample input, the splitting of the columns by tab seems to be failing.
Can you please chnage the input format to use a comma separated and change the line
country, state, city, population = line.strip.split("\t")
to use split(',')
This is my third mapreduce solution and in each one of these I have the same problem.
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