Is it important for Hadoop MapReduce jobs to be written in Java?

845

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what job does the conf class do?

793

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What is the key- value pair in Hadoop MapReduce?

679

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What is InputFormat in Hadoop MapReduce?

671

---

What are the various InputFormats in Hadoop?

650

---

Explain InputSplit in Hadoop MapReduce?

678

---

How much space will the split occupy in Mapreduce?

675

---

What is a RecordReader in Hadoop MapReduce?

677

---

What is the difference between HDFS block and input split?

893

---

How to write MapReduce Programs?

719

---

What is Apache Hive?

831

---

What kind of applications is supported by Apache Hive?

812

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How can you configure remote metastore mode in Hive?

829

---

What is indexing and why do we need it?

825

---

What is the use of Hcatalog?

940

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