What is the difference between Apache Hadoop and RDBMS?

438

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How is security achieved in Apache Hadoop?

432

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What is Apache Hadoop?

516

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What is a “Distributed Cache” in Apache Hadoop?

417

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What is the problem with small files in Apache Hadoop?

445

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What is Rack Awareness in Apache Hadoop?

438

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Explain Erasure Coding in Apache Hadoop?

410

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What is Disk Balancer in Apache Hadoop?

437

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What is a speculative execution in Apache Hadoop MapReduce?

436

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What are the modes in which Apache Hadoop run?

446

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What is Safemode in Apache Hadoop?

397

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

418

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Why is Apache Spark faster than Apache Hadoop?

434

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What does ‘jps’ command do?

417

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Mention what is the use of Context Object?

423

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