What do you understand by mapreduce?
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What is mapper in map reduce?
What is the Hadoop MapReduce API contract for a key and value Class?
Mention what are the main configuration parameters that user need to specify to run mapreduce job?
In Hadoop what is InputSplit?
Why Mapper runs in heavy weight process and not in a thread in MapReduce?
what is a Task Tracker in Hadoop?
how JobTracker schedules a task ?
What is the need of MapReduce in Hadoop?
How does MapReduce framework view its input internally?
What is an input reader in reference to mapreduce?
What is the function of mapreducer partitioner?
What is a TaskInstance?
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