How to configure hadoop to reuse JVM for mappers?


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More Apache Hadoop Interview Questions

What if a namenode has no data?

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How can I install Cloudera VM in my system?

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What is structured data?

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What are the additional benefits YARN brings in to Hadoop?

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Does Hadoop requires RAID?

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What are the two main parts of the hadoop framework?

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In which location Name Node stores its Metadata and why?

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What is the functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?

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Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?

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Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?

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What is nlineoutputformat?

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What are the network requirements for using hadoop?

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