What is the role of recordreader in hadoop mapreduce?


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More MapReduce Interview Questions

Explain about the partitioning, shuffle and sort phase

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What are the the issues associated with the map and reduce slots based mechanism in mapReduce?

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How to set mappers and reducers for Hadoop jobs?

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Define the Use of MapReduce?

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How many InputSplits is made by a Hadoop Framework?

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When should you use a reducer?

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Which among the two is preferable for the project- Hadoop MapReduce or Apache Spark?

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How does inputsplit in mapreduce determines the record boundaries correctly?

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When is it not recommended to use MapReduce paradigm for large scale data processing?

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In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?

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Is Mapreduce Required For Impala? Will Impala Continue To Work As Expected If Mapreduce Is Stopped?

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Explain what is distributed cache in mapreduce framework?

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