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What are combiners? When should I use a combiner in my MapReduce Job?
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what daemons run on a master node and slave nodes?
With the help of two examples name the map and reduce function purpose
What do you mean by shuffling and sorting in MapReduce?
How do you stop a running job gracefully?
How is reporting controlled in hadoop?
What is the difference between RDBMS with Hadoop MapReduce?
what is "map" and what is "reducer" in Hadoop?
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What is the difference between Hadoop and RDBMS?
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