What is the difference between map and reduce?

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More MapReduce Interview Questions

Illustrate a simple example of the working of MapReduce.

What is the fundamental difference between a MapReduce InputSplit and HDFS block?

Explain the process of spilling in Hadoop MapReduce?

Explain what does the conf.setMapper Class do in MapReduce?

What is a Speculative Execution in Hadoop MapReduce?

What are the steps involved in MapReduce framework?

Mention when to use Map reduce mode?

What is the need of MapReduce?

It can be possible that a Job has 0 reducers?

how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?

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

Can we submit the mapreduce job from slave node?

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