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What is the main advantage of Apache Spark over classic MapReduce?

  1. A In-memory processing between stages, avoiding writing intermediate results to disk
  2. B It requires less code
  3. C It uses a different file system
  4. D It only runs on one machine
Answer

In-memory processing between stages, avoiding writing intermediate results to disk

Iterative workloads such as machine learning benefit most, since MapReduce writes to disk after every stage.

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