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What do you know about the speculative execution?


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More Hadoop General Interview Questions

What is active and passive NameNode in Hadoop?

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Why aggregation cannot be done in Mapper?

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What is hadoop? Name the main components of a hadoop application?

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

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Can you explain edge nodes in hadoop?

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List of the some best tools that can be useful for data-analysis?

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Explain how is data partitioned before it is sent to the reducer if no custom partitioner is defined in hadoop?

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After increasing the replication level, I still see that data is under replicated. What could be wrong?

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How to debug Hadoop code?

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