Explain what are the basic parameters of a mapper?
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Explain the features of Apache Spark because of which it is superior to Apache MapReduce?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
What is the next step after Mapper or MapTask?
Where is the output of Mapper written in Hadoop?
Why MapReduce uses the key-value pair to process the data?
What is heartbeat in hdfs?
What is Mapper in Hadoop MapReduce?
What is Shuffling and Sorting in a MapReduce?
How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?
What is the default value of map and reduce max attempts?
Is YARN a replacement of Hadoop MapReduce?
What do you mean by data locality?
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