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  1. Categories >> Software >> Big Data >> Hadoop >> Apache Hadoop
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What is a secondary namenode?

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More Apache Hadoop Interview Questions

Define a daemon?

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What is Hadoop streaming?

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Name some companies that use Hadoop?

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How to restart Namenode?

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What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?

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What is the problem with small files in Apache Hadoop?

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Explain the difference between gen1 and gen2 hadoop with regards to the namenode?

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How to configure hadoop to reuse JVM for mappers?

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

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On What concept the Hadoop framework works?

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What happens to job tracker when namenode is down?

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Is hadoop a memory?

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