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What are 'slaves' and 'masters' in Hadoop?


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More Hadoop General Interview Questions

Is it possible to rename the output file, and if so, how?

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What sorts of actions does the job tracker process perform?

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Web-ui shows that half of the datanodes are in decommissioning mode. What does that mean? Is it safe to remove those nodes from the network?

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What does rack awareness algorithm means and why is it utilized as a part of hadoop?

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What are the main features and Characteristics of Hadoop which makes it the most popular and powerful Big Data tool?

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What happen if a datanode loses network connection for a few minutes?

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What happens if the number of reducers is 0 in Hadoop?

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Is there another way to check whether Namenode is working?

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List out the some common problems faced by data analyst?

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Is it possible to have hadoop job output in multiple directories? If yes, how?

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What is the NameNode port number?

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Which scala library is used for functional programming?

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