III-COR-Small: Towards More Flexible, Expressive and Robust Stream Systems

III-COR-Small：迈向更灵活、更具表现力和稳健的流系统

• 批准号: 0917349
• 负责人: Kristin Tufte
• 金额: $ 38.98万
• 依托单位: Portland State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-07-01 至 2013-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0917349&HistoricalAwards=false
• 关键词: III; COR; Small; Towards; More

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Current stream engines are mostly stand-alone systems, whereas in many applications, stream processing will be one component of a larger information system. Coupling with other components, such as user interfaces, transactional data and archives will be increasingly important. For stream queries to be robust over extended execution periods, they must have the means to adapt to both internal and external changes. Changes in input rates, time lags and data distributions can cause shifts in internal memory and processing loads. Operators must adapt to these changes both local and in concert with other operators. Variations in client demands create opportunities for improved resource use to which operators must adapt. For a stream processing system to be robust in the face of changing workloads and possible system faults, the architecture must have levels of flexibility and adaptivity not currently existing. The team proposes three approaches to developing the necessary flexibility. They will use a formal analysis that will provide precise notions of time and progress, in order to provide criteria and metrics for a variety of situations. In addition, they will elaborate operator and architecture design activities that will then be implemented and evaluated in two different data stream systems. In addition to faculty at Portland State University and graduate students there, the team has an ongoing collaboration with AT&T Research, who will provide access for testing the new system. The techniques developed on this project will broaden the number of applications that can be reasonably served with data stream systems, and by working with commercial systems, the adoption of those techniques into next-generation products will be accelerated. In addition to a new course in steam systems, the team works with high school interns each summer, who are recruited through the Saturday Academy program at Portland State.

该奖项是根据2009年的《美国回收与再投资法》（公共法律111-5）进行资助的。电流发动机主要是独立系统，而在许多应用中，流处理将是较大信息系统的组成部分。与其他组件（例如用户界面，交易数据和档案）结合起来将变得越来越重要。 为了使流查询在延长的执行期内具有稳健性，它们必须具有适应内部和外部更改的手段。 输入率，时间滞后和数据分布的变化可能会导致内部内存和处理负载的变化。 操作员必须适应本地和其他操作员的这些更改。客户需求的变化为改善运营商必须适应的资源使用创造了机会。 为了使流处理系统面对不断变化的工作负载和可能的系统故障，该系统必须具有稳健性，则体系结构必须具有当前不存在的灵活性和适应性级别。 团队提出了三种开发必要灵活性的方法。 他们将使用正式的分析，将提供精确的时间和进步概念，以便为各种情况提供标准和指标。此外，他们将详细阐述操作员和体系结构设计活动，然后在两个不同的数据流系统中实施和评估。 除了波特兰州立大学的教职员工和那里的研究生外，该团队还与AT＆T Research进行了持续的合作，他们将提供测试新系统的访问权限。 该项目开发的技术将扩大可以合理地与数据流系统一起使用的应用数量，并通过使用商业系统，将这些技术采用将这些技术采用到下一代产品中。 除了蒸汽系统的新课程外，该团队每年夏天还与高中实习生合作，这些实习生是通过波特兰州立大学的星期六学院计划招募的。