Distributed complex event processing with query rewriting
Proceedings of the Third ACM International Conference on Distributed Event-Based Systems
Distributed stream join query processing with semijoins
Distributed and Parallel Databases
Dynamic migration of processing elements for optimized query execution in event-based systems
OTM'11 Proceedings of the 2011th Confederated international conference on On the move to meaningful internet systems - Volume Part II
Synergy: sharing-aware component composition for distributed stream processing systems
Middleware'06 Proceedings of the 7th ACM/IFIP/USENIX international conference on Middleware
Distributed Adaptive Windowed Stream Join Processing
International Journal of Distributed Systems and Technologies
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We consider the problem of query optimization in distributed stream based systems where multiple continuous queries may be executing simultaneously. In such systems, distribution adds degrees of freedom to an already complex optimization problem. Thousands of network nodes may need to be considered for operator placements in order to support in-network processing - clearly overwhelming even from the perspective of distributed query optimization. Added to this complexity is the potential for significant savings by combining query plans in order to re-use the stream of intermediate results. These issues force us to develop new techniques for query optimization. We present a formal definition of the multi-query optimization problem in such systems and propose some initial directions.