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How does inputsplit in mapreduce determines the record boundaries correctly?
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What are the data components used by Hadoop?
In Hadoop what is InputSplit?
How does fault tolerance work in mapreduce?
how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?
When the reducers are are started in a mapreduce job?
What is a Distributed Cache in Hadoop?
How does Hadoop Classpath plays a vital role in stopping or starting in Hadoop daemons?
How to set mappers and reducers for MapReduce jobs?
Which are the methods in the mapper interface?
What is Reduce only jobs?
What is the role of recordreader in hadoop mapreduce?
What are the key differences between Pig vs MapReduce?
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