Q. What is a rack-aware Hadoop cluster?

  • (A) All nodes are in one rack
  • (B) Nodes are distributed across multiple racks and Hadoop knows it
  • (C) It has fewer DataNodes
  • (D) Only NameNodes are in separate racks
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✅ Correct Answer: (B) Nodes are distributed across multiple racks and Hadoop knows it
Explanation: Rack awareness helps in data placement and fault tolerance by distributing replicas across racks.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 07:25 am in Hadoop

Explanation by: Mr. Dubey
Rack awareness helps in data placement and fault tolerance by distributing replicas across racks.

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