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Apache Spark is an open source cluster computing system that aims to make data analytics fast — both fast to run and fast to write.To run programs faster, Spark offers a general execution model that can optimize arbitrary operator graphs, and supports in-memory computing, which lets it query data faster than disk-based engines like Hadoop.To make programming faster, Spark provides clean, concise APIs in Python, Scala and Java. You can also use Spark interactively from the Scala and Python shells
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