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Query regarding the object creation in map reduce code

+2 votes
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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.

PROBLEM STATEMENT :
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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