What is IdentityMapper?


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More Apache Hadoop Interview Questions

What should be the ideal replication factor in Hadoop Cluster?

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What do slaves consist of?

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How can you connect an application

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What is the difference between rdbms and hadoop?

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What is Rack Awareness in Apache Hadoop?

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What are the functions of NameNode?

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Define a metadata?

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Virtual Box & Ubuntu Installation?

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What is the function of ApplicationMaster?

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Explain the difference between gen1 and gen2 hadoop with regards to the namenode?

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Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?

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