How to handle the potential duplicates generated in the execution?

[XiaoYang-Code4Fun-zz]

I am thinking from an implementer point of view: the server may want to parallelize the execution, for example, dispatching one job per patient compartment. These patient compartments, however, may include shared resources. In the end, it may be too expensive to aggregate and dedup. I am curious to learn you thoughts. Is it expected that the server has to do a "MapReduce"?

Thank you very much!