What do you understand by mapreduce?
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What is the Hadoop MapReduce API contract for a key and value Class?
What combiners are and when you should utilize a combiner in a map reduce job?
What is the difference between a MapReduce InputSplit and HDFS block?
How to set mappers and reducers for Hadoop jobs?
Explain the general mapreduce algorithm
What do you understand by compute and storage nodes?
How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?
With the help of two examples name the map and reduce function purpose
What combiners are and when you should use a combiner in a mapreduce job?
How many numbers of reducers run in Map-Reduce Job?
What is the process of changing the split size if there is limited storage space on Commodity Hardware?
What is SequenceFileInputFormat?
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