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What is Reduce only jobs?



What is Reduce only jobs?..

Answer / bindu

It takes the output of map task as input and then do reduce work.

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More MapReduce Interview Questions

Explain about the partitioning, shuffle and sort phase

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What are the disservices of utilizing Apache Spark over Hadoop MapReduce?

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Name job control options specified by mapreduce.

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What is a Speculative Execution in Hadoop MapReduce?

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What is the need of MapReduce?

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How much space will the split occupy in Mapreduce?

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If reducers do not start before all mappers finish then why does the progress on mapreduce job shows something like map(50%) reduce(10%)? Why reducers progress percentage is displayed when mapper is not finished yet?

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What is the input type/format in MapReduce by default?

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What is the fundamental difference between a MapReduce Split and a HDFS block?scale data processing?

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How to set mappers and reducers for Hadoop jobs?

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What is Data Locality in Hadoop?

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