Jamie Grier created FLINK-4391:
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Summary: Provide support for asynchronous operations over streams
Key: FLINK-4391
URL: https://issues.apache.org/jira/browse/FLINK-4391
Project: Flink
Issue Type: New Feature
Components: DataStream API
Reporter: Jamie Grier
Many Flink users need to do asynchronous processing driven by data from a
DataStream. The classic example would be joining against an external database
in order to enrich a stream with extra information.
It would be nice to add general support for this type of operation in the Flink
API. Ideally this could simply take the form of a new operator that manages
async operations, keeps so many of them in flight, and then emits results to
downstream operators as the async operations complete.
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