When the reducers are are started in a mapreduce job?

604

---

Where the mapper's intermediate data will be stored?

644

---

Which are the methods in the mapper interface?

641

---

What is a namenode? How many instances of namenode run on a hadoop cluster?

646

---

What do you mean by taskinstance?

753

---

How hdfa differs with nfs?

749

---

How a task is scheduled by a jobtracker?

677

---

How many maximum jvm can run on a slave node?

692

---

What are the two main parts of the hadoop framework?

669

---

What is the use of combiners in the hadoop framework?

622

---

What is the jobtracker?

637

---

What is the jobtracker and what it performs in a hadoop cluster?

639

---

How many instances of tasktracker run on a hadoop cluster?

681

---

Explain the use of tasktracker in the hadoop cluster?

635

---

How does a namenode handle the failure of the data nodes?

691

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