What is the difference between Apache Hadoop and RDBMS?

440

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How is security achieved in Apache Hadoop?

436

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What is Apache Hadoop?

520

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What is a “Distributed Cache” in Apache Hadoop?

424

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What is the problem with small files in Apache Hadoop?

450

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What is Rack Awareness in Apache Hadoop?

440

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Explain Erasure Coding in Apache Hadoop?

414

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What is Disk Balancer in Apache Hadoop?

439

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What is a speculative execution in Apache Hadoop MapReduce?

440

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What are the modes in which Apache Hadoop run?

452

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What is Safemode in Apache Hadoop?

401

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

420

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Why is Apache Spark faster than Apache Hadoop?

436

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What does ‘jps’ command do?

421

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Mention what is the use of Context Object?

425

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