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

841

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what job does the conf class do?

784

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What is the key- value pair in Hadoop MapReduce?

677

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What is InputFormat in Hadoop MapReduce?

663

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What are the various InputFormats in Hadoop?

648

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Explain InputSplit in Hadoop MapReduce?

669

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How much space will the split occupy in Mapreduce?

670

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What is a RecordReader in Hadoop MapReduce?

674

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What is the difference between HDFS block and input split?

885

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How to write MapReduce Programs?

711

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What is Apache Hive?

824

---

What kind of applications is supported by Apache Hive?

811

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How can you configure remote metastore mode in Hive?

827

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What is indexing and why do we need it?

823

---

What is the use of Hcatalog?

937

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