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What are the core methods of a Reducer?


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More Hadoop General Interview Questions

Which database is used in hadoop?

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What happens when two clients try to access the same file in the hdfs?

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Can we create a hadoop cluster from scratch?

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Name the most common Input Formats defined in Hadoop? Which one is default?

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What are the most common InputFormats in Hadoop?

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Mention what is the difference between an rdbms and hadoop?

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How to specify more than one path for storage in Hadoop?

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

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What is streaming access?

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How Hadoop’s CLASSPATH plays a vital role in starting or stopping in Hadoop daemons?

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Why can we not create directory /user/dataflair/inpdata001 when name node is in safe mode?

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What is the use of cloudera?

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