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What is the difference between Reducer and Combiner in Hadoop MapReduce?
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What is the function of mapreducer partitioner?
What are the main configuration parameters in a MapReduce program?
In Hadoop what is InputSplit?
What platform and Java version is required to run Hadoop?
Mention what are the main configuration parameters that user need to specify to run mapreduce job?
What is the need of key-value pair to process the data in MapReduce?
Explain the process of spilling in Hadoop MapReduce?
What are the main components of MapReduce Job?
What does conf.setmapper class do?
How does inputsplit in mapreduce determines the record boundaries correctly?
What are combiners? When should I use a combiner in my MapReduce Job?
Define speculative execution?
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