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MapReduce Types and Formats and Setting up a Hadoop Cluster?
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More MapReduce Interview Questions
How can we control particular key should go in a specific reducer?
Explain what is “map” and what is "reducer" in hadoop?
What is OutputCommitter?
Explain about the partitioning, shuffle and sort phase
Why Mapreduce output written in local disk?
What are the configuration parameters in the 'MapReduce' program?
What are the various input and output types supported by mapreduce?
What is the difference between Job and Task in MapReduce?
Is it possible to rename the output file?
when do reducers play their role in a mapreduce task?
What happens when a datanode fails ?
What is shuffling and sorting in mapreduce?
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