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Reducing flow delays in a data streaming application caused by lookup operations
Reducing flow delays in a data streaming application caused by lookup operations
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机译:降低由查找操作引起的数据流应用程序中的流动延迟
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摘要
Profiling data characterizing a data streaming application is used to predict data which will need to be retrieved by a processing element during execution of the data streaming application. Data is retrieved responsive to the prediction, in advance of actual demand by the processing element which requires it. Prediction may be based at least in part on upstream tuple contents, and could include other historical data retrieval patterns. In some embodiments, retrieval of predicted data may be delayed so that data is retrieved just in time.
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