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  1. Categories >> Software >> Big Data >> Hadoop >> Apache Hadoop
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What Mapper does?

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More Apache Hadoop Interview Questions

How does an hadoop application look like or their basic components?

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What is Safemode in Apache Hadoop?

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What are the important differences between apache and hadoop?

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Explain how do ‘map’ and ‘reduce’ works?

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How does a namenode handle the failure of the data nodes?

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Is hadoop based on google mapreduce?

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Is secondary namenode a substitute to the namenode?

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How to enable trash/recycle bin in hadoop?

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How to restart Namenode?

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How blocks are distributed among all data nodes for a particular chunk of data?

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Is hadoop obsolete?

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What is Distributed Cache?

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