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What is partitioning in MapReduce?
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Can we set the number of reducers to zero in MapReduce?
How to specify more than one directory as input to the MapReduce Job?
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 can you check whether Namenode is working beside using the jps command?
Explain what does the conf.setMapper Class do in MapReduce?
A number of combiners can be changed or not in MapReduce?
What is a "reducer" in Hadoop?
How to write a custom partitioner for a Hadoop MapReduce job?
How do reducers communicate with each other?
What is the relationship between Job and Task in Hadoop?
What is the key- value pair in MapReduce?
What are the advantages of using mapreduce with hadoop?
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