M Mr. Dubey 🎓 Coach ⭐ 103.11K Points 📊 Hadoop Q. What is the purpose of the Combiner in MapReduce? (A) Preprocess input data (B) Reduce output size of Map phase (C) Split files (D) Combine reducers 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (B) Reduce output size of Map phase Explanation: Combiner acts as a mini-reducer to reduce the volume of data transferred between Map and Reduce.