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Uninterruptible Migration of Continuous Queries without Operator State Migration

DocUID: 2017-011 Full Text: PDF

Author: Thao N. Pham, Nikos R. Katsipoulakis, Panos K. Chrysanthis, Alexandros Labrinidis

Abstract: The elasticity brought by cloud infrastructure provides a promising solution for a data stream management system to handle its incoming workload, which can be highly variable: the system can scale out when heavily loaded, and scale in otherwise. In such a solution, the efficiency of the mechanism used to migrate a query from one node to another is very important. Generally, a stream application requires real-time outputs for its continuous queries, and downtime is not acceptable. Moreover, the migration should not add considerable processing cost to a node that could have been already overloaded. In this paper, we present our migration protocol, named UniMiCo, which satisfies those requirements. We implemented UniMiCo in a DSMS prototype and experimentally show that the protocol preserves correctness, while introducing no noticeable changes in the response time of the continuous query being migrated.

Keywords: Window operators

Published In: ACM SIGMOD Record

Volume: 46Number: 3Pages: 17-22

Year Published: 2017

Project: AQSIOS Subject Area: Data Streams

Publication Type: Journal Paper

Sponsor: RDF

Citation:Text Latex BibTex XML Thao N. Pham, Nikos R. Katsipoulakis, Panos K. Chrysanthis, and Alexandros Labrinidis. Uninterruptible Migration of Continuous Queries without Operator State Migration. ACM SIGMOD Record. 46(3):17-22. 2017.