Compare Hadoop 2 and Hadoop 3?

425

---

Explain Data Locality in Hadoop?

544

---

What is the problem with small files in Hadoop?

526

---

How is security achieved in Hadoop?

526

---

Why does one remove or add nodes in a Hadoop cluster frequently?

695

---

What is throughput in Hadoop?

536

---

How to restart NameNode or all the daemons in Hadoop?

542

---

What does jps command do in Hadoop?

659

---

What is fsck?

647

---

How to debug Hadoop code?

540

---

Explain Hadoop streaming?

482

---

What does hadoop-metrics.properties file do?

529

---

How Hadoop’s CLASSPATH plays a vital role in starting or stopping in Hadoop daemons?

422

---

What are the different commands used to startup and shutdown Hadoop daemons?

527

---

What is configured in /etc/hosts and what is its role in setting Hadoop cluster?

528

---