Explain about the partitioning, shuffle and sort phase

679

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What are the four basic parameters of a reducer?

666

---

what is distributed cache in mapreduce framework?

683

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What is the work of hive/hcatalog?

757

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What is apache hcatalog?

734

---

What is hive installation path?

751

---

What is hive metastore?

719

---

What is a task tracker?

48

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Explain the difference between nas and hdfs?

40

---

What is a job tracker?

38

---

What is the difference betwaeen mapreduce engine and hdfs cluster?

42

---

What is the difference between namenode, backup node and checkpoint namenode?

52

---

Is namenode also a commodity?

43

---

What does hbase consists of?

181

---

What are the three types of tombstone markers in hbase?

153

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