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What is the role of the namenode?


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More Hadoop General Interview Questions

Which database is used in hadoop?

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What is JobTracker?

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Which one is default?

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What do you mean by the NameNode High Availability in hadoop?

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How can one write custom record reader?

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Mention what does the text input format do?

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Ideally what should be the block size in hadoop?

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What are some typical functions of job tracker in hadoop?

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What is the difference between an inputsplit and a block?

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What is Distributed Cache in Hadoop?

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Why do we need hadoop for big data analytics?

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Where are hadoop’s configuration files located and list them?

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