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A general fragments allocation method for join query in distributed database
文献类型:期刊
作者:Gao, Jintao[1]  Liu, Wenjie[2]  Li, Zhanhuai[3]  Zhang, Jian[4]  Shen, Li[5]  
机构:[1]Northwestern Polytechnical University, Xi'an, 710072, China
[2]Northwestern Polytechnical University, Xi'an, 710072, China
[3]Northwestern Polytechnical University, Xi'an, 710072, China
[4]PingCAP Ltd., Beijing, 100096, China
[5]PingCAP Ltd., Beijing, 100096, China
通讯作者:Gao, Jintao(gaojintao@mail.nwpu.edu.cn)
年:2020
期刊名称:Information Sciences影响因子和分区
卷:512
页码范围:1249-1263
增刊:正刊
学科:计算机科学
收录情况:SCI(E)(WOS:000504778300076)  EI(20194507642768)  
所属部门:计算机学院
重要成果类型:重要期刊
基金:国家重点研发计划(2018YFB1003403);国家自然科学基金(61732014,61672432,61672434);陕西省基础研究计划(2017JM6104)
关键词:Distributed database; Genetic algorithm; Query optimization; Fragments allocation; Robustness
摘要:
The quality of fragments allocation is key for improving performance of join query in distributed database. Current strategies concentrate on using heuristic rules to allocate fragments to corresponding locations, such as picking the location with maximum required data or with greedy algorithm. Notwithstanding their benefits, under distributed environment, facing various query plans, different data distributions and expensive network cost, their scene-sensitive character may easily generate low ...More
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