I am new to map reduce paradigm. I read in a tutorial that says that 'map' function splits the data and into key value pairs. This means, the map-reduce framework automatically splits the data into pieces or do we need to explicitly provide the method to split the data into pieces. If it does automatically, how it splits an image file (size etc)? I see, processing of an image file as a whole will give different results than processing them in chunks.
With thanks and regards
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