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What is Identity reducer?


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More Hadoop General Interview Questions

What are the main features and Characteristics of Hadoop which makes it the most popular and powerful Big Data tool?

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Is hadoop still in demand?

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What is the key difference between NameNode and DataNode in Hadoop?

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How to handle bad records during parsing?

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Is it possible to provide multiple input to Hadoop? If yes then how?

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Which are the three modes in which hadoop can be run?

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Can you define inputsplit in hadoop?

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Which directory does hadoop install to?

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Can we deploy job tracker other than name node?

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Explain what is speculative execution?

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Explain the key benefits of using storm for real time processing?

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What are the primary phases of the reducer?

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