Resource Sharing in Continuous Sliding-Window Aggregates


We consider the problem of resource sharing when processing large numbers of continuous queries. We specifically address sliding-window aggregates over data streams, an important class of continuous operators for which sharing has not been addressed. We present a suite of sharing techniques that cover a wide range of possible scenarios: different classes of aggregation functions (algebraic, distributive, holistic), different window types (time-based, tuple-based, suffix, historical), and different input models (single stream, multiple substreams). We provide precise theoretical performance guarantees for our techniques, and show their practical effectiveness through a thorough experimental study.

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@inproceedings{Arasu2004ResourceSI, title={Resource Sharing in Continuous Sliding-Window Aggregates}, author={Arvind Arasu and Jennifer Widom}, booktitle={VLDB}, year={2004} }