How does inputsplit in mapreduce determines the record boundaries correctly?
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What is the function of mapreduce partitioner?
How to set the number of mappers for a MapReduce job?
What is Reduce only jobs?
What is Distributed Cache in the MapReduce Framework?
Is it necessary to write a mapreduce job in java?
What is OutputCommitter?
What is a distributed cache in mapreduce framework?
what are the most common input formats defined in Hadoop?
What is MapReduce? What are the syntax you use to run a MapReduce program?
what is a Task Tracker in Hadoop?
Does mapreduce programming model provide a way for reducers to communicate with each other? In a mapreduce job can a reducer communicate with another reducer?
Explain the process of spilling in Hadoop MapReduce?
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