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More Apache Hadoop Interview Questions

What is HDFS block size and what did you chose in your project?

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Is it necessary to write jobs for hadoop in the java language?

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What do you know about keyvaluetextinputformat?

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What are the steps to submit a Hadoop job?

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Explain the use of .mecia class?

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Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?

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What is the purpose of RawComparator interface?

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If a data Node is full how it's identified?

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What's the best way to copy files between HDFS clusters?

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