hi all, can someone plz help me understand how a user defined map function incorporates with the map reduce framework
the interface dictates user map to have key, value as arguments (map defined in mapper.java) the input or value passed to a mapper is the input split but what form or data struct is key.... is it a list of keys? cause one map func maps multiple keys in one input split that it works on! cause for map passing key value makes a lot of sense .... reduce the list of values for the given key! plz help????? cheers momina
