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How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?
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Explain the features of Apache Spark because of which it is superior to Apache MapReduce?
What do you understand by compute and storage nodes?
What is a "reducer" in Hadoop?
In mapreduce what is a scarce system resource? Explain?
What is identity mapper and identity reducer?
What happens when a DataNode fails during the write process?
Explain what does the conf.setMapper Class do in MapReduce?
How to optimize Hadoop MapReduce Job?
What is the relationship between Job and Task in Hadoop?
What is identity mapper and reducer? In which cases can we use them?
What is a combiner and where you should use it?
What is the inputsplit in map reduce software?
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