Q. What is the role of the Hadoop MapReduce "Map Output Sorting" in advanced MapReduce? (A) Sort keys on the mapper side (B) Sort keys on the reducer side (C) Sort keys within a reducer (D) Sort keys across multiple reducers 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (A) Sort keys on the mapper side