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What are the four basic parameters of a mapper?


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More Hadoop General Interview Questions

Mention what does the text input format do?

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Can you explain the common input formats in hadoop?

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What is the logistic regression?

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Why is checkpointing important in hadoop?

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What is winutils hadoop?

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What do you think about the speculative execution?

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If no custom partitioner is defined in Hadoop then how is data partitioned before it is sent to the reducer?

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Why is Data Block size set to 128 MB in Hadoop?

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How Hadoop is cost-effective?

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What are the Hadoop features extended to its eco-system components ?

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Compare Apache Hadoop and Apache Spark?

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What happen if one of the datanodes has much slower cpu?

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