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What does the command mapred.job.tracker do?
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What are the functions of NameNode?
Explain a simple Map/Reduce problem.
Data Engineer Given a list of followers in the format:123, 345234, 678345, 123…Where column one is the ID of the follower and column two is the ID of the followee. Find all mutual following pairs (the pair 123, 345 in the example above). How would you use Map/Reduce to solve the problem when the list does not fit in memory?
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Define tasktracker.
How a task is scheduled by a jobtracker?
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