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What are active and passive "NameNodes"?


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More Apache Hadoop Interview Questions

Why is hadoop faster?

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What are the limitations of importing RDBMS tables into Hcatalog directly?

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What do sorting do?

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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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What is formatting of the dfs?

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What is the purpose of button groups?

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Explain the use of .mecia class?

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Explain use cases where SequenceFile class can be a good fit?

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How does master slave architecture in the hadoop?

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Explain how can we change the split size if our commodity hardware has less storage space?

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Explain why the name ‘hadoop’?

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What is HDFS block size and what did you chose in your project?

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