Robust real-time query processing with QStream

Authors:
Sven Schmidt;Thomas Legler;Sebastian Schär;Wolfgang Lehner
Affiliations:
Dresden University of Technology;Dresden University of Technology;Dresden University of Technology;Dresden University of Technology
Venue:
VLDB '05 Proceedings of the 31st international conference on Very large data bases
Year:
2005

Citing 5
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Abstract

Processing data streams with Quality-of-Service (QoS) guarantees is an emerging area in existing streaming applications. Although it is possible to negotiate the result quality and to reserve the required processing resources in advance, it remains a challenge to adapt the DSMS to data stream characteristics which are not known in advance or are difficult to obtain. Within this paper we present the second generation of our QStream DSMS which addresses the above challenge by using a real-time capable operating system environment for resource reservation and by applying an adaptation mechanism if the data stream characteristics change spontaneously.