Examples of MapReduce

Understanding the workflow of MapReduce with an Example

On a daily basis the micro-blogging site Twitter receives nearly 500 million tweets, i.e., 3000 tweets per second. We can see the illustration on Twitter with the help of MapReduce.

Mapreduce examples

In the above example Twitter data is an input, and MapReduce performs the actions like Tokenize, filter, count and aggregate counters.

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Tokenize: Tokenizes the tweets into maps of tokens and writes them as key-value pairs.

Filter: It filters the unwanted words from maps of tokens.

Count: Generates a token counter per word.

Aggregate counters: Prepares a combination of similar counter values into small manageable units.

Here is a Mapreduce Tutorial Video by Intellipaat

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About the Author

Technical Research Analyst - Big Data Engineering

Abhijit is a Technical Research Analyst specialising in Big Data and Azure Data Engineering. He has 4+ years of experience in the Big data domain and provides consultancy services to several Fortune 500 companies. His expertise includes breaking down highly technical concepts into easy-to-understand content.