What can be optimum value for Reducer?
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Explain what you understand by speculative execution
What is Reduce only jobs?
What are the main configuration parameters in a MapReduce program?
Explain the Reducer's Sort phase?
What is identity mapper and reducer? In which cases can we use them?
Explain the process of spilling in Hadoop MapReduce?
What is SequenceFileInputFormat in Hadoop MapReduce?
What do you understand by compute and storage nodes?
What is the need of MapReduce in Hadoop?
What do sorting and shuffling do?
What is RecordReader in a Map Reduce?
what is JobTracker in Hadoop? What are the actions followed by Hadoop?
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