Gloria: Graph-based Sharing Optimizer for Event Trend Aggregation
Gloria: Graph-based Sharing Optimizer for Event Trend Aggregation
复制标题
Gloria:基于图的事件趋势聚合共享优化器
DOI:
10.1145/3514221.3526145
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Rundensteiner, Elke A.
中科院分区:
文献类型:
--
作者:
Ma, Lei;Lei, Chuan;Poppe, Olga;Rundensteiner, Elke A.
Large workloads of event trend aggregation queries are widely deployed to derive high-level insights about current event trends in near real time. To speed-up the execution, we identify and leverage sharing opportunities from complex patterns with flat Kleene operators or even nested Kleene expressions. We propose Gloria, a graph-based sharing optimizer for event trend aggregation. First, we map the sharing optimization problem to a graph path search problem in the Gloria graph with execution costs encoded as weights. Second, we shrink the search space by applying cost-driven pruning principles that guarantee optimality of the reduced Gloria graph in most cases. Lastly, we propose a path search algorithm that identifies the sharing plan with minimum execution costs. Our experimental study on three real-world data sets demonstrates that our Gloria optimizer effectively reduces the search space, leading to 5-fold speed-up in optimization time. The optimized plan consistently reduces the query latency by 68%-93% compared to the plan generated by state-of-the-art approaches.
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DOI:
10.1145/3340531.3412138
发表时间:
2020
期刊:
Proceedings of the 29th ACM International Conference on Information & Knowledge Management
影响因子:
--
作者:
Rozet, Allison;Poppe, Olga;Lei, Chuan;Rundensteiner, Elke A.
通讯作者:
Rundensteiner, Elke A.
影响因子:
2.5
作者:
Poppe, Olga;Lei, Chuan;Rundensteiner, Elke;Maier, David
通讯作者:
Maier, David
DOI:
10.1145/2588555.2593684
发表时间:
2014
期刊:
Proceedings of the 2014 ACM SIGMOD International Conference on Management of Data
影响因子:
--
作者:
Yingmei Qi;Lei Cao;M. Ray;Elke A. Rundensteiner
通讯作者:
Elke A. Rundensteiner
DOI:
10.1145/3299869.3319862
发表时间:
2019
期刊:
SIGMOD
影响因子:
--
作者:
Poppe, Olga;Lei, Chuan;Rundensteiner, Elke A.;Maier, David
通讯作者:
Maier, David