What are watches?

1033

---

Explain the Job OutputFormat?

960

---

Virtual Box & Ubuntu Installation?

990

---

What is the difference between HDFS and NAS ?

1372

---

How Mapper is instantiated in a running job?

993

---

Where do you specify the Mapper Implementation?

1019

---

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

1059

---

What is the InputFormat ?

1021

---

Command to format the NameNode?

936

---

Who is a 'user' in HDFS?

891

---

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

1308

---

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

1018

---

What is DistributedCache and its purpose?

902

---

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

918

---

How you can contact your client everyday ?

974

---