基于滑动窗口的分布式数据流多连接算法

DongDong Zhang, Jianzhong Li, Kimutai Kimeli, Weiping Wang
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引用次数: 11

摘要

本文主要研究分布式数据流上的多路滑动窗口连接(SWJoin)处理。提出了一种基于两种分布式数据流传输模型的连接算法。为了降低通信成本,减轻中央处理器节点的工作负荷,该算法在数据流传输过程中将SWJoin的连接条件转化为过滤条件,过滤掉不能产生多路SWJoin结果的元组。此外,该算法保证生成精确的多路SWJoin结果所需的所有数据都可以传输到中央处理器节点。
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SlidingWindow based Multi-Join Algorithms over Distributed Data Streams
This paper focuses on multi-way sliding window join (SWJoin) processing over distributed data streams. A novel Join algorithm is proposed based on two distributed data stream transfer models. To reduce the communication cost and lighten the workload on the central processor node, the algorithm filters out tuples that can’t contribute to multiway SWJoin results by transforming the join conditions of SWJoin into filtering conditions during data stream transfer. Furthermore, the algorithm guarantees that all necessary data for generating exact multi-way SWJoin results can be transmitted to the central processor node.
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