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Can you define udf?


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More Hadoop General Interview Questions

Explain how do you overwrite replication factor?

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What do you understand by standalone (or local) mode?

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What is the use of cloudera?

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Explain how Hadoop cluster hardware planning and provisioning is done?

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What happen if number of reducer is set to 0 in Hadoop?

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Can you explain sequence file in hadoop?

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Which operating system(s) are supported for production hadoop deployment?

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Ideally what should be replication factor in a Hadoop cluster?

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What is Reducer in Hadoop?

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Compare Hadoop 2 and Hadoop 3?

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What is job tracker role in hadoop?

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Can you explain the common input formats in hadoop?

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