What is OutputCommitter?
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How to optimize MapReduce Job?
What is MapReduce? What are the syntax you use to run a MapReduce program?
How is reporting controlled in hadoop?
When should you use a reducer?
How many Reducers run for a MapReduce job?
how can you debug Hadoop code?
What is the function of mapreducer partitioner?
Explain combiners.
How to create custom key and custom value in MapReduce Job?
what is JobTracker in Hadoop? What are the actions followed by Hadoop?
How to set mappers and reducers for Hadoop jobs?
Explain job scheduling through JobTracker
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