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What are the core methods of a Reducer?


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More Hadoop General Interview Questions

What is the logistic regression?

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what if job tracker machine is down?

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Doesn’t google have its very own version of dfs?

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What is the default replication factor in Hadoop and how will you change it?

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Is Namenode machine same as DataNode machine as in terms of hardware?

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Explain some important features of hadoop?

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What are the functionalities of jobtracer?

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What is single node cluster in Hadoop? for what all purposes Hadoop run on a single node cluster?

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What do you understand by unit and ()in scala?

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When and how to create hadoop archive?

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What is job tracker role in hadoop?

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What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?

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