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What are the four basic parameters of a mapper?


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More Hadoop General Interview Questions

What is the block size in Hadoop?

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What is JPS? Why is it used in Hadoop?

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What is single node cluster in Hadoop? for what all purposes Hadoop run on a single node cluster?

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If datanodes increase, then do we need to upgrade namenode?

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Explain what is a task tracker in hadoop?

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Why do we need Hadoop?

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What is Distributed Cache in Hadoop?

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Explain small file problem in hadoop

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Which modes can Hadoop be run in? List a few features for each mode?

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How to create hadoop archive?

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What is a namenode?

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If DataNode increases, then do we need to upgrade NameNode in Hadoop?

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