What is the difference between Apache Hadoop and RDBMS?

754

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How is security achieved in Apache Hadoop?

851

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What is Apache Hadoop?

807

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What is a “Distributed Cache” in Apache Hadoop?

731

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What is the problem with small files in Apache Hadoop?

744

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What is Rack Awareness in Apache Hadoop?

763

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Explain Erasure Coding in Apache Hadoop?

708

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What is Disk Balancer in Apache Hadoop?

814

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What is a speculative execution in Apache Hadoop MapReduce?

745

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What are the modes in which Apache Hadoop run?

757

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What is Safemode in Apache Hadoop?

693

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What are the different methods to run Spark over Apache Hadoop?

684

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Why is Apache Spark faster than Apache Hadoop?

794

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What does ‘jps’ command do?

658

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Mention what is the use of Context Object?

680

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