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How can one write custom record reader?


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More Hadoop General Interview Questions

What are the major differences between Hadoop 2 and Hadoop 3?

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What is Reducer in Hadoop?

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Can we create a hadoop cluster from scratch?

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

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What are the side effects of not running a secondary name node?

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Explain map-only job?

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How many InputSplits will be made by hadoop framework?

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Why is Data Block size set to 128 MB in Hadoop?

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Ideally what should be the block size in hadoop?

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What type of data hadoop can handle ?

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If no custom partitioner is defined in Hadoop then how is data partitioned before it is sent to the reducer?

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How can we create a hadoop cluster from scratch?

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