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SIGMOD
2004
ACM

StreaMon: An Adaptive Engine for Stream Query Processing

9 years 4 months ago
StreaMon: An Adaptive Engine for Stream Query Processing
StreaMon is the adaptive query processing engine of the STREAM prototype Data Stream Management System (DSMS) [4]. A fundamental challenge in many DSMS applications (e.g., network monitoring, financial monitoring over stock tickers, sensor processing) is that conditions may vary significantly over time. Since queries in these systems are usually long-running, or continuous [4], it is important to consider adaptive approaches to query processing. Without adaptivity, performance may drop drastically as stream data and arrival characteristics, query loads, and system conditions change over time. StreaMon uses several techniques to support adaptive query processing [1, 2, 3]; we demonstrate three of them: ? Reducing run-time memory requirements for continuous queries by exploiting stream data and arrival patterns. ? Adaptive join ordering for pipelined multiway stream joins, with strong quality guarantees. ? Placing subresult caches adaptively in pipelined multiway stream joins to avoid r...
Shivnath Babu, Jennifer Widom
Added 08 Dec 2009
Updated 08 Dec 2009
Type Conference
Year 2004
Where SIGMOD
Authors Shivnath Babu, Jennifer Widom
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