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In Hadoop, which file controls reporting in Hadoop?
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Is there any point of learning mapreduce, then?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
Mention Hadoop core components?
What is the input type/format in MapReduce by default?
Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?
how can you debug Hadoop code?
What is shuffling in mapreduce?
Is Mapreduce Required For Impala? Will Impala Continue To Work As Expected If Mapreduce Is Stopped?
What is Counter in MapReduce?
What is the problem with the small file in Hadoop?
what is "map" and what is "reducer" in Hadoop?
What is OutputCommitter?
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