ifndef-SleePy opened a new pull request #8721: [FLINK-12823][datastream] PartitionTransformation supports DataExchan… URL: https://github.com/apache/flink/pull/8721 …geMode property ## What is the purpose of the change * Since `StreamTransformation` would also support batch runner in 1.9, the result partition type of `StreamTransformation` should not be hard-coded with `PIPELINED_BOUNDED` * We need to provide a way for upper level API upon `StreamTransformation` to configure the result partition type of edge ## Brief change log * Expose a property `DataExchangeMode` of `PartitionTransformation` as an internal API of `StreamTransformation` * Pass the `DataExchangeMode` to `StreamEdge` * `StreamingJobGraphGenerator` chooses the appropriate result partition type based on `DataExchangeMode` of `StreamEdge` ## Verifying this change * Add an unit test of `StreamingJobGraphGeneratorTest` ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): no - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: no - The serializers: no - The runtime per-record code paths (performance sensitive): no - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: no - The S3 file system connector: no ## Documentation - Does this pull request introduce a new feature? no - If yes, how is the feature documented? not applicable
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