Q. What is the purpose of block scanner in DataNode?

  • (A) Reads files
  • (B) Verifies data integrity
  • (C) Transfers files
  • (D) Schedules jobs
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✅ Correct Answer: (B) Verifies data integrity
Explanation: Block scanner verifies integrity of stored data blocks.

Published by Mr. Dubey ⭐ 111.54K Points at 19-Apr-2026 08:56 pm in Hadoop

Explanation by: Mr. Dubey
Block scanner verifies integrity of stored data blocks.

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