What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?

1110

---

What are the components of Hive architecture?

1123

---

What is HDFS Federation?

1010

---

What are watches?

1042

---

Explain the Job OutputFormat?

970

---

Virtual Box & Ubuntu Installation?

1003

---

What is the difference between HDFS and NAS ?

1388

---

How Mapper is instantiated in a running job?

1009

---

Where do you specify the Mapper Implementation?

1033

---

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

1067

---

What is the InputFormat ?

1029

---

Command to format the NameNode?

951

---

Who is a 'user' in HDFS?

900

---

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

1319

---

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

1027

---