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What is a combiner and where you should use it?
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More MapReduce Interview Questions
What are the steps involved in MapReduce framework?
How data is spilt in Hadoop?
What is the core of the job in MapReduce framework?
Explain the input type/format in mapreduce by default?
Why is output file name in Hadoop MapReduce part-r-00000?
What is the fundamental difference between a MapReduce InputSplit and HDFS block?
What happens when a DataNode fails during the write process?
What is shuffleing in mapreduce?
What is the InputSplit in map reduce ?
Illustrate a simple example of the working of MapReduce.
What does a split do?
What do you mean by shuffling and sorting in MapReduce?
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