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  1. Categories >> Software >> Big Data >> Hadoop >> Hadoop General
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What is difference between reducer and combiner?

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More Hadoop General Interview Questions

What is the purpose of RecordReader in hadoop?

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Explain what is a sequence file in hadoop?

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How often DataNode send heartbeat to NameNode in Hadoop?

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Explain how does hadoop classpath plays a vital role in stopping or starting in hadoop daemons?

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Compare Apache Hadoop and Apache Spark?

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Explain Hadoop Archives?

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What are the side effects of not running a secondary name node?

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What is Combiner in Hadoop?

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What is fsck?

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Where are Hadoop’s configuration files located?

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What happens if one hadoop client renames a file or a directory containing this file while another client is still writing into it?

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Can you give some examples of Big Data?

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