How to optimize Hadoop MapReduce Job?
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What is Text Input Format?
Define the purpose of the partition function in mapreduce framework
Where sorting is done in Hadoop MapReduce Job?
What is a IdentityMapper and IdentityReducer in MapReduce ?
For a job in Hadoop, is it possible to change the number of mappers to be created?
Explain the Reducer's reduce phase?
What is a "reducer" in Hadoop?
What is MapReduce?
Is it mandatory to set input and output type/format in MapReduce?
How is reporting controlled in hadoop?
What do you understand by mapreduce?
What is the difference between Hadoop and RDBMS?
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