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  1. Categories >> Software >> Big Data >> Hadoop >> Apache Hadoop
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What is a namenode? How many instances of namenode run on a hadoop cluster?

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Explain the benefits of block transfer?

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Did you ever built a production process in hadoop ? If yes then what was the process when your hadoop job fails due to any reason?

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Explain the use of .mecia class?

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Why do we use Hadoop?

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