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Why do the nodes are removed and added frequently in a hadoop cluster?


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More Hadoop General Interview Questions

What are the four basic parameters of a mapper?

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Are job tracker and task trackers present in separate machines?

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Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?

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Explain how can you debug hadoop code?

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Explain what is a task tracker in hadoop?

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What is Combiner in Hadoop?

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What is structured and unstructured data?

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Explain what is sequencefileinputformat?

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Can we write map reduce program in other than java programming language. How?

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Where is hadoop-env.sh file present?

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Explain in which directory hadoop is installed?

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How can native libraries be included in yarn jobs?

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