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Explain the usage of Context Object?


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More Hadoop General Interview Questions

Did you ever ran into a lop sided job that resulted in out of memory error, if yes then how did you handled it ?

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Is it possible to provide multiple input to Hadoop? If yes then how?

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Why slaves limited to 4000 in hadoop version 1?

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Why aggregation cannot be done in Mapper?

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How many datanodes can run on a single Hadoop cluster?

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What is the purpose of RecordReader in hadoop?

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

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Where are Hadoop’s configuration files located?

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Are there any special requirements for namenode?

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How can we create a hadoop cluster from scratch?

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