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Title: | Parallel-Correctness and Transferability for Conjunctive Queries | Authors: | AMELOOT, Tom GECK, Gaetano KETSMAN, Bas NEVEN, Frank Schwentick, Thomas |
Issue Date: | 2017 | Source: | JOURNAL OF THE ACM, 64(5) | Abstract: | 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 are first reshuffled over many servers and then evaluated in a parallel but communication-free way. The reshuffling itself is specified as a distribution policy. We introduce a correctness condition, called parallel-correctness, for the evaluation of queries w.r.t. a distribution policy. We study the complexity of parallel-correctness for conjunctive queries as well as transferability of parallel-correctness between queries. We also investigate the complexity of transferability for certain families of distribution policies, including the Hypercube distribution policies. | Notes: | Ameloot, TJ (reprint author), Hasselt Univ, Martelarenlaan 42, B-3500 Hasselt, Belgium. tom.ameloot@uhasselt.be; gaetano.geck@tu-dortmund.de; bas.ketsman@uhasselt.be; frank.neven@uhasselt.be; thomas.schwentick@tu-dortmund.de | Keywords: | Distributed databases; Parallel query evaluation; One-round evaluation; Distribution policies | Document URI: | http://hdl.handle.net/1942/25630 | ISSN: | 0004-5411 | e-ISSN: | 1557-735X | DOI: | 10.1145/3106412 | ISI #: | 000443590400008 | Rights: | Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from permissions@acm.org. | Category: | A1 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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jacm2016-final.pdf Restricted Access | Peer-reviewed author version | 502.45 kB | Adobe PDF | View/Open Request a copy |
a36-ameloot.pdf Restricted Access | Published version | 725.81 kB | Adobe PDF | View/Open Request a copy |
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