What are watches?

1030

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Explain the Job OutputFormat?

957

---

Virtual Box & Ubuntu Installation?

986

---

What is the difference between HDFS and NAS ?

1368

---

How Mapper is instantiated in a running job?

990

---

Where do you specify the Mapper Implementation?

1003

---

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

1054

---

What is the InputFormat ?

1010

---

Command to format the NameNode?

932

---

Who is a 'user' in HDFS?

886

---

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

1303

---

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

1012

---

What is DistributedCache and its purpose?

899

---

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

913

---

How you can contact your client everyday ?

970

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