How to write a Custom Key Class?


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More Apache Hadoop Interview Questions

Define a metadata?

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On which port does ssh work?

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What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?

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What is Rack Awareness in Apache Hadoop?

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How to resolve IOException: Cannot create directory

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How would you use Map/Reduce to split a very large graph into smaller pieces and parallelize the computation of edges according to the fast/dynamic change of data?

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What is Apache Hadoop?

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Can Apache Kafka be used without Zookeeper?

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

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How to configure hadoop to reuse JVM for mappers?

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what is a datanode?

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

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