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The focus of this paper is on investigating efficient hash join algorithms for modern multi-core processors in main memory environments. This paper dissects each internal phase of a typical hash join algorithm and considers different alternatives for implementing each phase, producing a family of hash join algorithms. Then, we implement these main memory algorithms on two radically different modern multi-processor systems, and carefully examine the factors that impact the performance of each method.
Blanas et al. (Sun,) studied this question.
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