Q. What is speculative execution in MapReduce?

  • (A) Running a task on the fastest node
  • (B) Running a duplicate task to finish early
  • (C) Retrying failed tasks automatically
  • (D) Compressing job output
💬 Discuss
✅ Correct Answer: (B) Running a duplicate task to finish early
Explanation: Speculative execution runs a backup of slow tasks on another node to speed up job completion.

Published by Rati Dubey ⭐ 8.55K Points at 18-Jun-2025 08:40 am in Hadoop

Explanation by: Rati Dubey
Speculative execution runs a backup of slow tasks on another node to speed up job completion.

💬 Discussion

📊 Question Analytics

👁️
107
Total Visits
📽️
1 y ago
Published
🎖️
Rati Dubey
Publisher
📈
93%
Success Rate