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In this paper, we develop algorithms for the data aggregation problem which arises in the context of big-data applications that employ the MapReduce operation. For the case when source racks can send their data to the aggregator using multiple paths, we show that an aggregation tree topology that minimizes aggregation time can be constructed in polynomial time. We consider also the problem of constructing...
We consider several important problems for which no polynomially time bounded algorithm is known. These problems are shown to be related in that a polynomial algorithm for one implies a polynomial algorithm for the others.
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