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What is the difference between Job and Task in MapReduce?
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What are the various input and output types supported by mapreduce?
What is identity mapper and chain mapper?
What is MapReduce? What are the syntax you use to run a MapReduce program?
What is a "reducer" in Hadoop?
What is the difference between HDFS block and input split?
What happens when the node running the map task fails before the map output has been sent to the reducer?
Explain what is “map” and what is "reducer" in hadoop?
When the reducers are are started in a mapreduce job?
What is the process of changing the split size if there is limited storage space on Commodity Hardware?
What is an identity mapper and identity reducer?
What do you mean by inputformat?
Different ways of debugging a job in MapReduce?
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