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Can there be no Reducer?
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What is the input type/format in MapReduce by default?
What is the need of MapReduce in Hadoop?
Is it legal to set the number of reducer task to zero? Where the output will be stored in this case?
How is mapreduce related to cloud computing?
How to create a custom key and custom value in MapReduce Job?
How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?
What is the difference between HDFS block and input split?
How much space will the split occupy in Mapreduce?
What are combiners? When should I use a combiner in my MapReduce Job?
Write a short note on the disadvantages of mapreduce
how can you check whether Namenode is working beside using the jps command?
Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?
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