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What is identity mapper and reducer? In which cases can we use them?
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What is a distributed cache in mapreduce framework?
How to specify more than one directory as input in the Hadoop MapReduce Program?
How is mapreduce related to cloud computing?
What is an identity mapper and identity reducer?
A number of combiners can be changed or not in MapReduce?
Why do we need MapReduce during Pig programming?
What are the main configuration parameters in a MapReduce program?
What is the Hadoop MapReduce API contract for a key and value Class?
Whether the output of mapper or output of partitioner written on local disk?
What is shuffling and sorting in Hadoop MapReduce?
Can MapReduce program be written in any language other than Java?
what does the text input format do?
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