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

855

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what job does the conf class do?

803

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What is the key- value pair in Hadoop MapReduce?

687

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What is InputFormat in Hadoop MapReduce?

682

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What are the various InputFormats in Hadoop?

659

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Explain InputSplit in Hadoop MapReduce?

682

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How much space will the split occupy in Mapreduce?

684

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What is a RecordReader in Hadoop MapReduce?

690

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What is the difference between HDFS block and input split?

895

---

How to write MapReduce Programs?

721

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What is Apache Hive?

833

---

What kind of applications is supported by Apache Hive?

819

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How can you configure remote metastore mode in Hive?

840

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What is indexing and why do we need it?

832

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What is the use of Hcatalog?

947

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