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  1. Categories >> Software >> Big Data >> Hadoop >> Apache Hadoop
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How to restart Namenode?

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More Apache Hadoop Interview Questions

Explain the features of fully distributed mode?

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Can the balancer be run while Hadoop is in use?

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Can you explain how do ‘map’ and ‘reduce’ work?

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Explain the basic architecture of Hadoop?

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What is HDFS Block size? How is it different from traditional file system block size?

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Define streaming access?

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What problems can be addressed by using Zookeeper?

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What are the important differences between apache and hadoop?

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What are the main components of a Hadoop Application?

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Explain the wordcount implementation via hadoop framework ?

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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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How to write a Custom Key Class?

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