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Why is output file name in Hadoop MapReduce part-r-00000?
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What is Combiner in MapReduce?
Explain what is “map” and what is "reducer" in hadoop?
Mention what is the next step after mapper or maptask?
What is a partitioner and how the user can control which key will go to which reducer?
How many times combiner is called on a mapper node in Hadoop?
What is Mapper in Hadoop MapReduce?
What are the various input and output types supported by mapreduce?
What is a combiner and where you should use it?
Explain what does the conf.setMapper Class do in MapReduce?
How hadoop mapreduce works?
What are the advantages of using mapreduce with hadoop?
Explain about the partitioning, shuffle and sort phase
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