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What is the significance of data locality in distributed processing?

  1. A Moving computation to where the data resides avoids expensive network transfer
  2. B Data must be stored locally on one node
  3. C It refers to geographic data
  4. D It concerns data residency law
Answer

Moving computation to where the data resides avoids expensive network transfer

Network bandwidth is typically the scarcest resource in a cluster, which is why scheduling favours nodes already holding the data.

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