What are watches?

696

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Explain the Job OutputFormat?

696

---

Virtual Box & Ubuntu Installation?

621

---

What is the difference between HDFS and NAS ?

958

---

How Mapper is instantiated in a running job?

742

---

Where do you specify the Mapper Implementation?

625

---

What is the meaning of speculative execution in Hadoop? Why is it important?

749

---

What is the InputFormat ?

675

---

Command to format the NameNode?

633

---

Who is a 'user' in HDFS?

654

---

What is the meaning of the term "non-DFS used" in Hadoop web-console?

940

---

did you maintain the hadoop cluster in-house or used hadoop in the cloud?

710

---

What is DistributedCache and its purpose?

622

---

What is HDFS ? How it is different from traditional file systems?

625

---

How you can contact your client everyday ?

590

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