Parallel-Correctness and Transferability for Conjunctive Queries
Parallel-Correctness and Transferability for Conjunctive Queries
A dominant cost for query evaluation in modern massively distributed systems is the number of communication rounds. For this reason, there is a growing interest in single-round multiway join algorithms where data is first reshuffled over many servers and then evaluated in a parallel but communication-free way. The reshuffling itself …