What is the difference between Apache Hadoop and RDBMS?

804

---

How is security achieved in Apache Hadoop?

901

---

What is Apache Hadoop?

849

---

What is a “Distributed Cache” in Apache Hadoop?

770

---

What is the problem with small files in Apache Hadoop?

779

---

What is Rack Awareness in Apache Hadoop?

807

---

Explain Erasure Coding in Apache Hadoop?

745

---

What is Disk Balancer in Apache Hadoop?

871

---

What is a speculative execution in Apache Hadoop MapReduce?

784

---

What are the modes in which Apache Hadoop run?

794

---

What is Safemode in Apache Hadoop?

731

---

What are the different methods to run Spark over Apache Hadoop?

713

---

Why is Apache Spark faster than Apache Hadoop?

836

---

What does ‘jps’ command do?

690

---

Mention what is the use of Context Object?

717

---