Explain how to implement MapReduce for the following common problems: word count, inverted index, and mean calculation. Provide a brief description and a sample code for each problem.
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Using the MapReduce framework, explain how you would find the second-degree friends for each user in a social network. Provide a brief description and a sample code for the solution.
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MapReduce Random Lines from Large Log Files: Using the MapReduce framework, how would you get X amount of random lines from large log files?
Managing a Pool of IPs: Describe how you would design a system to manage a pool of IP addresses, ensuring efficient allocation and deallocation.
Rotated Array Search: Given a rotated sorted array, write a Python function to search for a target value. Explain your approach and provide the solution.
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What is Big Data and what is Hadoop used for?
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