No pane, no gain

Author:

Li Jin1,Maier David1,Tufte Kristin1,Papadimos Vassilis1,Tucker Peter A.2

Affiliation:

1. Portland State University, Portland, OR

2. Whitworth College, Spokane, WA

Abstract

Windows queries are proving essential to data-stream processing. In this paper, we present an approach for evaluating sliding-window aggregate queries that reduces both space and computation time for query execution. Our approach divides overlapping windows into disjoint panes, computes sub-aggregates over each pane, and "rolls up" the pane-aggregates to computer window-aggregates. Our experimental study shows that using panes has significant performance benefits.

Publisher

Association for Computing Machinery (ACM)

Subject

Information Systems,Software

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