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What is the Reducer used for?
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Does mapreduce programming model provide a way for reducers to communicate with each other? In a mapreduce job can a reducer communicate with another reducer?
How to specify more than one directory as input to the MapReduce Job?
How do reducers communicate with each other?
What is the role of a MapReduce partitioner?
What do you understand by mapreduce?
Explain what is the function of mapreduce partitioner?
How to submit extra files(jars, static files) for MapReduce job during runtime?
What is the difference between an RDBMS and Hadoop?
What is the difference between Hadoop and RDBMS?
What is the difference between Reducer and Combiner in Hadoop MapReduce?
Mention Hadoop core components?
Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
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