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Do we require two servers for the namenode and the datanodes?


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More Hadoop General Interview Questions

Are job tracker and task trackers present in separate machines?

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what happens when namenode goes down during file read operation in hadoop?

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is there a standard procedure to deploy hadoop?

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Web-ui shows that half of the datanodes are in decommissioning mode. What does that mean? Is it safe to remove those nodes from the network?

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What is Reducer in Hadoop?

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How Big is ‘Big Data’?

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Explain the core methods of the reducer?

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What is Federation?

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What is data cleansing?

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Is hadoop still in demand?

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Is it possible to rename the output file, and if so, how?

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What are the features of Standalone (local) mode?

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