What is the difference between Apache Hadoop and RDBMS?

814

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How is security achieved in Apache Hadoop?

916

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What is Apache Hadoop?

862

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What is a “Distributed Cache” in Apache Hadoop?

787

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What is the problem with small files in Apache Hadoop?

784

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What is Rack Awareness in Apache Hadoop?

815

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Explain Erasure Coding in Apache Hadoop?

756

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What is Disk Balancer in Apache Hadoop?

901

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What is a speculative execution in Apache Hadoop MapReduce?

798

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What are the modes in which Apache Hadoop run?

800

---

What is Safemode in Apache Hadoop?

735

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

718

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Why is Apache Spark faster than Apache Hadoop?

846

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What does ‘jps’ command do?

702

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Mention what is the use of Context Object?

721

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