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The world by storm in recent years, the word big data network, many IT professionals and business people predicted: the world will enter the era of big data.
What is big data? According to the definition of wikipedia, the so-called big data (bigdata) in today's Internet industry refers to such a phenomenon: a network company daily operations generated and accumulated user network behavior data growth so fast, so it is difficult to use the existing database management tools to manage, difficulties exist in the data acquisition, storage, search, share, analysis and visualization, etc. The amount of data is so large, is not by how much we know how many G and T for the unit to measure, but in P (1000 T), E (one million T) and Z (1 billion T) as the unit of measurement, so