摘要:
A keyed delay is used in the processing of streaming data to decrease the processing performed and the output provided. A first event, within a particular window, having a particular key starts a delay condition. Arriving events with the same key replace the previous arrival for that key until the delay condition is satisfied. In response thereto, the latest event with that key is output.
摘要:
A keyed delay is used in the processing of streaming data to decrease the processing performed and the output provided. A first event, within a particular window, having a particular key starts a delay condition. Arriving events with the same key replace the previous arrival for that key until the delay condition is satisfied. In response thereto, the latest event with that key is output.
摘要:
Techniques for dynamically modifying inter-connections between components in an application are provided. The techniques include receiving a data producer profile for each output port within a software application to be executed on one or more processors, receiving a data subscription profile for each input port of each component of the application, establishing connections between the output ports and the input ports of the components in the application based on a comparison of each data producer profile and each data subscription profile, executing the application on one or more processors to process streams of data, receiving either or both of a new data producer profile or a new data subscription profile during the execution of the application, and establishing at least one new connection between an output port and an input port based upon a revised comparison of the received data profiles that include the new data profile.
摘要:
A keyed join is used in the processing of streaming data to streamline processing to provide higher throughput and decreased use of resources. The most recent event for each unique replacement key value(s) is maintained substituting older events with the same key. An incoming event is joined with the data received from one or more other data sources, and the correlations are output.
摘要:
A keyed join is used in the processing of streaming data to streamline processing to provide higher throughput and decreased use of resources. The most recent event for each unique replacement key value(s) is maintained substituting older events with the same key. An incoming event is joined with the data received from one or more other data sources, and the correlations are output.
摘要:
Keyed aggregation is used in the processing of streaming data to streamline processing to provide higher throughput and decreased use of resources. The most recent event for each unique replacement key value(s) is maintained. In response to an incoming event having a same key as a previous event, the effect on an aggregation of the previous event is removed. The aggregation is then updated with one or more values from the arriving event and the updated aggregation is output.
摘要:
Keyed aggregation is used in the processing of streaming data to streamline processing to provide higher throughput and decreased use of resources. The most recent event for each unique replacement key value(s) is maintained. In response to an incoming event having a same key as a previous event, the effect on an aggregation of the previous event is removed. The aggregation is then updated with one or more values from the arriving event and the updated aggregation is output.
摘要:
A virtual execution environment (VEE) for a streaming Intermediate Language (IL), wherein the streaming IL represents a streaming program, communicates streaming data in queues, stores data-at-rest in variables, and determines data by functions, where inputs are read from the queues and the variables, and outputs are written to the queues and the variables.
摘要:
A method is provided for tracing dataflow in a distributed computing application. For example, the method includes incrementally advancing a dataflow in a dataflow path of one or more dataflow paths according to two or more directives encoded in two or more data messages. The method further includes performing the two or more directives. The dataflow path includes one or more operators including at least one merge operator operative to merge the two or more data messages and merge the two or more directives. One or more of the incrementally advancing of the dataflow and the performing of the two or more directives are implemented as instruction code performed on a processor device.
摘要:
A method and computer program product for selecting an expression evaluation technique for domain-specific language (DSL) compilation. An application written in DSL for a programming task is provided, the application including a plurality of components configured by expressions. A technique that most quickly implements the programming task is selected from a plurality of techniques for evaluating the expressions. The DSL application is compiled in accordance with the selected expression evaluation technique to generate general-purpose programming language (GPL) code.