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

482

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what job does the conf class do?

488

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What is the key- value pair in Hadoop MapReduce?

401

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What is InputFormat in Hadoop MapReduce?

363

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What are the various InputFormats in Hadoop?

370

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Explain InputSplit in Hadoop MapReduce?

389

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How much space will the split occupy in Mapreduce?

395

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What is a RecordReader in Hadoop MapReduce?

392

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What is the difference between HDFS block and input split?

455

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How to write MapReduce Programs?

397

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What is Apache Hive?

459

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What kind of applications is supported by Apache Hive?

444

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How can you configure remote metastore mode in Hive?

466

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What is indexing and why do we need it?

456

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What is the use of Hcatalog?

514

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