What do you mean by inputformat?
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What is a TaskInstance?
What are the data components used by Hadoop?
What is a map side join?
How many Reducers run for a MapReduce job in Hadoop?
Is YARN a replacement of Hadoop MapReduce?
What is the role of a MapReduce partitioner?
How to set the number of mappers for a MapReduce job?
What can be optimum value for Reducer?
Is it mandatory to set input and output type/format in MapReduce?
What are the various input and output types supported by mapreduce?
How to set mappers and reducers for Hadoop jobs?
Where the mapper's intermediate data will be stored?
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