NDLI: Incremental View Maintenance over Array Data

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Incremental View Maintenance over Array Data

Content Provider	ACM Digital Library
Author	Wu, Kesheng Zhao, Weijie Rusu, Florin Dong, Bin Nugent, Peter
Abstract	Science applications are producing an ever-increasing volume of multi-dimensional data that are mainly processed with distributed array databases. These raw arrays are ``cooked'' into derived data products using complex pipelines that are time-consuming. As a result, derived data products are released infrequently and become stale soon thereafter. In this paper, we introduce materialized array views as a database construct for scientific data products. We model the ``cooking'' process as incremental view maintenance with batch updates and give a three-stage heuristic that finds effective update plans. Moreover, the heuristic repartitions the array and the view continuously based on a window of past updates as a side-effect of view maintenance without overhead. We design an analytical cost model for integrating materialized array views in queries. A thorough experimental evaluation confirms that the proposed techniques are able to incrementally maintain a real astronomical data product in a production environment.
Starting Page	139
Ending Page	154
Page Count	16
File Format	PDF
ISBN	9781450341974
DOI	10.1145/3035918.3064041
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2017-05-09
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Workload-driven array reorganization Greedy heuristics Mixed-integer programming Array similarity join Batch updates
Content Type	Text
Resource Type	Article

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