What are watches?

1071

---

Explain the Job OutputFormat?

1002

---

Virtual Box & Ubuntu Installation?

1048

---

What is the difference between HDFS and NAS ?

1422

---

How Mapper is instantiated in a running job?

1036

---

Where do you specify the Mapper Implementation?

1060

---

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

1092

---

What is the InputFormat ?

1066

---

Command to format the NameNode?

986

---

Who is a 'user' in HDFS?

941

---

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

1355

---

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

1057

---

What is DistributedCache and its purpose?

944

---

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

956

---

How you can contact your client everyday ?

1009

---