What is the key- value pair in MapReduce?
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how can you debug Hadoop code?
Is it mandatory to set input and output type/format in MapReduce?
How does inputsplit in mapreduce determines the record boundaries correctly?
What are ‘reduces’?
How can you add the arbitrary key-value pairs in your mapper?
How much space will the split occupy in Mapreduce?
Why can aggregation not be done in Mapper in MapReduce?
What is shuffling in mapreduce?
For a job in Hadoop, is it possible to change the number of mappers to be created?
What do you mean by data locality?
What do you understand by compute and storage nodes?
How to set mappers and reducers for Hadoop jobs?
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