V Vikash Gupta 🎓 Tutor III ⭐ 33.56K Points 📊 Hadoop Q. The HDFS file system is temporarily unavailable whenever the HDFS . . . . . . . . is down. (A) DataNode (B) NameNode (C) ActionNode (D) None of the mentioned 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (B) NameNode