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What is NameNode? How NameNode tackle Datanode failures in Hadoop?


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More Hadoop General Interview Questions

Can hadoop replace relational database?

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What mode(s) can hadoop code be run in?

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Explain is it possible to search for files using wildcards?

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Which language is more suitable for text analytics? R or python?

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What does hadoop-metrics.properties file do?

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List out the some common problems faced by data analyst?

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What is the role of the secondary namenode?

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Which database is used in hadoop?

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Explain the core methods of the reducer?

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what is next step after mapper or maptask?

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What is TextInputFormat in Hadoop?

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What are some of the characteristics of Hadoop framework?

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