Whether the output of mapper or output of partitioner written on local disk?
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What are the various input and output types supported by mapreduce?
how JobTracker schedules a task ?
Explain what is shuffling in mapreduce?
How much space will the split occupy in Mapreduce?
What is the role of recordreader in hadoop mapreduce?
How to write MapReduce Programs?
What is the purpose of textinputformat?
What is heartbeat in hdfs? Explain.
How to set the number of reducers?
Explain about the partitioning, shuffle and sort phase in MapReduce?
Which are the methods in the mapper interface?
Difference between mapreduce and spark
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