What are the side effects of not running a secondary name node?

491

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What are the main components of hadoop?

488

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What do you understand by unit and ()in scala?

542

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Can you define udf?

481

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What is the difference between an inputsplit and a block?

687

---

What is the purpose of context object?

468

---

Can you explain sequence file in hadoop?

454

---

What is the use of recordreader in hadoop?

464

---

What is data cleansing?

495

---

What is the number of default partitioner in hadoop?

483

---

Can you explain hadoop streaming?

458

---

List out some common problems faced by data analyst?

495

---

What is job tracker role in hadoop?

530

---

What do you understand by a closure in scala?

529

---

Can you explain textinformat?

543

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