How do you stop a running job gracefully?
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How do ‘map’ and ‘reduce’ work?
What is a map side join?
What is a "reducer" in Hadoop?
How to set the number of reducers?
What is Reduce only jobs?
Is it possible to search for files using wildcards?
What is shuffling in mapreduce?
What is LazyOutputFormat in MapReduce?
What is RecordReader in a Map Reduce?
What are the primary phases of a Reducer?
What is the need of key-value pair to process the data in MapReduce?
Is it important for Hadoop MapReduce jobs to be written in Java?
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