Is it legal to set the number of reducer task to zero? Where the output will be stored in this case?
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what does the text input format do?
What are combiners? When should I use a combiner in my MapReduce Job?
Why comparison of types is important for MapReduce?
Mention what is the hadoop mapreduce apis contract for a key and value class?
Is Mapreduce Required For Impala? Will Impala Continue To Work As Expected If Mapreduce Is Stopped?
Why Mapper runs in heavy weight process and not in a thread in MapReduce?
What is sqoop in Hadoop ?
Define the Use of MapReduce?
When the reducers are are started in a mapreduce job?
A number of combiners can be changed or not in MapReduce?
What is the key- value pair in MapReduce?
What is LazyOutputFormat in MapReduce?
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