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Query regarding the object creation in map reduce code

+2 votes

I need your help in writing the map reduce program in Java. I am creating a mapper and reducer classes for reading and processing a log file. I also have many other class files which acts as supporting classes to mapper and will be instantiated from mapper class within the map function.

Since there are 20 other objects which will be instantiated from mapper class within the map function, we think this could create a performance hit because of multiple object creation .

Please let us know what could be best approach/design to instantiate these 20 classes from Mapper class without compromising on the performance.

Your suggestions/comments are welcome.

posted Dec 5, 2014 by anonymous

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