what if job tracker machine is down?

515

---

What are the four basic parameters of a mapper?

620

---

In which location name node sores its metadata and why?

706

---

What are input format, input split & record reader and what they do?

671

---

How namenode handles data node failures?

569

---

What is the non dfs used?

594

---

How can one write custom record reader?

529

---

Whats the default port that jobtrackers listens ?

515

---

Do we need to place 2nd and 3rd data in rack 2 only?

487

---

Is nosql follow relational db model?

504

---

What are the different clustering in mahout?

39

---

What does apache mahout do?

57

---

What is the difference between apache mahout and apache spark’s mllib?

37

---

What is the roadmap for apache mahout version 1.0?

53

---

What is apache mahout?

45

---