Hi, Is it possible to have multiple key formats in map and reduce. I am reading from a file which contains a string and a double. I would like the map to output the string as a string and convert the double written in the file to a double from a string. THen I would like reduce to concatenate the strings and add the doubles. We could have doubles as strings too and we can cast them back to doubles but I think it would be computationally easy if they are doubles after the map job to start with. Any clues?
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