Is reduce-only job possible in Hadoop MapReduce?
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What is a partitioner and how the user can control which key will go to which reducer?
What is Counter in MapReduce?
Differentiate Reducer and Combiner in Hadoop MapReduce?
Explain the difference between a MapReduce InputSplit and HDFS block?
How to create a custom key and custom value in MapReduce Job?
What is streaming?
What do you mean by shuffling and sorting in MapReduce?
Is it possible to split 100 lines of input as a single split in MapReduce?
What is the InputSplit in map reduce ?
What does conf.setmapper class do?
Illustrate a simple example of the working of MapReduce.
What is sqoop in Hadoop ?
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