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What is the jobtracker and what it performs in a hadoop cluster?


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More Apache Hadoop Interview Questions

What happens to a namenode, when job tracker is down?

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What is oozie in hadoop?

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What are the modules that constitute the Apache Hadoop 2.0 framework?

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What is Distributed Cache?

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What Mapper does?

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What is a Combiner?

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What is the port number for NameNode

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What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?

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How is the distance between two nodes defined in Hadoop?

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Explain the use of tasktracker in the hadoop cluster?

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Explain the benefits of block transfer?

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How do you categorize a big data?

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