Define the Use of MapReduce?

678

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Whether the output of mapper or output of partitioner written on local disk?

677

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How to handle record boundaries in Text files or Sequence files in MapReduce InputSplits?

709

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Explain the process of spilling in MapReduce?

604

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List Hadoop’s three configuration files?

427

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What is Distributed Cache in Hadoop?

467

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What is the relationship between Jobs and Tasks in Hadoop?

622

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Who are ‘Data Scientists’?

424

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Tell me some major benefits of Hadoop?

414

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What is structured and unstructured data?

457

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According to IBM, what are the three characteristics of Big Data?

443

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Which port does SSH work on?

412

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Is there another way to check whether Namenode is working?

411

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What is the NameNode port number?

407

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Give me an example of document database ?

484

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