What sorts of actions does the job tracker process perform?

477

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What are the main components in Hadoop Eco-System and what are their functions ?

531

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Name the most common Input Formats defined in Hadoop? Which one is default?

499

---

What is the block size in Hadoop?

477

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Can you give some examples of Big Data?

525

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After the Map phase finishes, the Hadoop framework does 'Partitioning, Shuffle and sort'. Explain what happens in this phase?

521

---

What is streaming in Hadoop?

470

---

What is a commodity hardware? Does commodity hardware include RAM?

559

---

What is streaming access?

543

---

How can you set an arbitrary number of Reducers to be created for a job in Hadoop?

509

---

Give examples of some companies that are using Hadoop structure?

477

---

Which modes can Hadoop be run in? List a few features for each mode?

509

---

How analysis of Big Data is useful for organizations?

530

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What does the file hadoop-metrics.properties do?

536

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Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?

502

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