Why we use intwritable instead of int? Why we use longwritable instead of long?

483

---

What happens if you don?t override the mapper methods and keep them as it is?

462

---

What are the side data distribution techniques?

484

---

Can we deploy job tracker other than name node?

684

---

Did you ever ran into a lop sided job that resulted in out of memory error, if yes then how did you handled it ?

442

---

How many maps are there in a particular job?

460

---

Can I set the number of reducers to zero?

399

---

Doesn’t google have its very own version of dfs?

484

---

What are the restriction to the key and value class ?

433

---

If we want to copy 10 blocks from one machine to another, but another machine can copy only 8.5 blocks, can the blocks be broken at the time of replication?

665

---

If datanodes increase, then do we need to upgrade namenode?

467

---

Which object can be used to get the progress of a particular job

472

---

Give me examples of unstructured data?

484

---

Explain the core methods of the reducer?

515

---

How to handle bad records during parsing?

453

---