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What is the purpose of RawComparator interface?


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More Apache Hadoop Interview Questions

Explain why do we need hadoop?

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What is a secondary namenode?

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What infrastructure do we need to process 100 TB data using Hadoop?

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Why is Apache Spark faster than Apache Hadoop?

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What are the two main parts of the hadoop framework?

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what is SPF?

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What are the most commonly defined input formats in Hadoop?

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Data Engineer Given a list of followers in the format:123, 345234, 678345, 123…Where column one is the ID of the follower and column two is the ID of the followee. Find all mutual following pairs (the pair 123, 345 in the example above). How would you use Map/Reduce to solve the problem when the list does not fit in memory?

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What are the Basics of Hadoop?

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What do you mean by taskinstance?

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What is a speculative execution in Apache Hadoop MapReduce?

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What is rack-aware replica placement policy?

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