What does conf.setmapper class do?
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How many Reducers run for a MapReduce job?
Which among the two is preferable for the project- Hadoop MapReduce or Apache Spark?
what are the three modes in which Hadoop can be run?
Write a short note on the disadvantages of mapreduce
Is it mandatory to set input and output type/format in MapReduce?
What are the main configuration parameters in a MapReduce program?
What is the difference between Hadoop and RDBMS?
Different ways of debugging a job in MapReduce?
What are combiners? When should I use a combiner in my MapReduce Job?
What is a "map" in Hadoop?
what daemons run on a master node and slave nodes?
What is the difference between Job and Task in MapReduce?