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How can you set an arbitrary number of mappers to be created for a job in Hadoop?


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More Hadoop General Interview Questions

Give examples of some companies that are using Hadoop structure?

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Explain what happens when hadoop spawned 50 tasks for a job and one of the task failed?

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Can you explain record reader?

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How Hadoop’s CLASSPATH plays a vital role in starting or stopping in Hadoop daemons?

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Can you explain commodity hardware?

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What are the actions followed by hadoop?

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What is tasktracker in hadoop?

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Explain what is hadoop?

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What is partitioning?

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Which are the three modes in which hadoop can be run?

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Is it possible to have hadoop job output in multiple directories?

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Give me the examples of Columnar database ?

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