What is the purpose of RawComparator interface?


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More Apache Hadoop Interview Questions

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

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shouldn't DFS be able to handle large volumes of data already?

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Virtual Box & Ubuntu Installation?

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Mention what are the data components used by Hadoop?

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What is a namenode? How many instances of namenode run on a hadoop cluster?

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What are the important differences between apache and hadoop?

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Which command is used for the retrieval of the status of daemons running the hadoop cluster?

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

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How Mapper is instantiated in a running job?

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Explain what happens in textinformat ?

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how to share the metastore within multiple users?

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Define a metadata?

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