What is the sequence of execution of map, reduce, recordreader, split, combiner, partitioner?
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What comes in Hadoop 2.0 and MapReduce V2 YARN
Explain what is “map” and what is "reducer" in hadoop?
With the help of two examples name the map and reduce function purpose
What happens when the node running the map task fails before the map output has been sent to the reducer?
In Hadoop what is InputSplit?
What is shuffling and sorting in mapreduce?
Is it mandatory to set input and output type/format in MapReduce?
What is a Speculative Execution in Hadoop MapReduce?
For a Hadoop job, how will you write a custom partitioner?
what does the conf.setMapper Class do ?
Why do we need MapReduce during Pig programming?
What is LazyOutputFormat in MapReduce?
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