Conference contribution
(Original article)


Runtime Migration of Stateful Event Detectors with Low-Latency Ordering Constraints


Publication Details
Author(s): Mutschler C, Philippsen M
Title edited volumes: 2013 IEEE International Conference on Pervasive Computing and Communications Workshops, PerCom Workshops 2013
Publication year: 2013
Conference Proceedings Title: Proceedings of the 2013 IEEE International Conference on Pervasive Computing and Communications Workshops
Pages range: 609-614
ISBN: 978-1-4673-5075-4

Event details
Event: 9th International Workshop on Sensor Networks and Systems for Pervasive Computing
Event location: San Diego, CA
Start date of the event: 18/03/2013
End date of the event: 22/03/2013
Language: English

Abstract

Runtime migration has been widely adopted to achieve several tasks such as load balancing, performance optimization, and fault-tolerance. However, existing migration techniques do not work for event detectors in distributed publish/subscribe systems that are used to analyze sensor data. Since low-latency time-constraints are no longer valid they reorder streams incorrectly and cause erroneous event detector states. This paper presents a safe runtime migration of stateful event detectors that respects low-latency time-constraints and seamlessly orders input events correctly on the migrated host. Event streams are only forwarded until timing delays are properly calibrated, the migrated event detector immediately stops processing after its state is transferred, and the processing overhead is negligible. On a Realtime Locating System (RTLS) we show that we can efficiently migrate event detectors at runtime between servers where other techniques would fail. © 2013 IEEE.



Focus Area of Individual Faculties


How to cite
APA: Mutschler, C., & Philippsen, M. (2013). Runtime Migration of Stateful Event Detectors with Low-Latency Ordering Constraints. In Proceedings of the 2013 IEEE International Conference on Pervasive Computing and Communications Workshops (pp. 609-614).

MLA: Mutschler, Christopher, and Michael Philippsen. "Runtime Migration of Stateful Event Detectors with Low-Latency Ordering Constraints." Proceedings of the 9th International Workshop on Sensor Networks and Systems for Pervasive Computing, San Diego, CA 2013. 609-614.

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