Which of the Following Statements About MapReduce Is False

question 29

Multiple Choice

Which of the following statements about MapReduce is false

• A) In the MapReduce step, Hadoop divides the data into batches that it distributes across the nodes in the cluster.
• B) Hadoop also distributes the MapReduce task's code to the nodes in the cluster and executes the code on one node at a time sequentially. Each node processes only the batch of data stored on that node.
• C) The reduction step combines the results from all the nodes to produce the final result.
• D) To coordinate all this, Hadoop uses YARN ("yet another resource negotiator") to manage all the resources in the cluster and schedule tasks for execution.

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