Explain what is sequencefileinputformat?

454

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Mention how hadoop is different from other data processing tools?

407

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Mention what are the most common input formats defined in hadoop?

442

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Mention what is rack awareness?

381

---

Mention what is the difference between an rdbms and hadoop?

422

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Mention what are the three modes in which hadoop can be run?

419

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Explain how does hadoop classpath plays a vital role in stopping or starting in hadoop daemons?

614

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Explain what is storage and compute nodes?

512

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Explain how jobtracker schedules a task?

465

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Explain what happens when hadoop spawned 50 tasks for a job and one of the task failed?

438

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What happens in text format?

435

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Explain how is data partitioned before it is sent to the reducer if no custom partitioner is defined in hadoop?

445

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Explain what is a task tracker in hadoop?

439

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Explain what is speculative execution?

423

---

Explain what happens in text format?

571

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