What do you understand by mapreduce?
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What is the core of the job in MapReduce framework?
How can we control particular key should go in a specific reducer?
What is shuffling and sorting in mapreduce?
What is SequenceFileInputFormat in Hadoop MapReduce?
What is the next step after Mapper or MapTask?
What combiners are and when you should use a combiner in a mapreduce job?
Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
What happen if the number of the reducer is 0 in MapReduce?
What is an input reader in reference to mapreduce?
What are the fundamental configurations parameters specified in map reduce?
How many InputSplits is made by a Hadoop Framework?
what are the most common input formats defined in Hadoop?
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