LadyForest opened a new pull request, #22222: URL: https://github.com/apache/flink/pull/22222
## What is the purpose of the change This pull request fixes the NPE when getting `RelWindowProperties` for `StreamPhysicalGlobalWindowAggregate`. This is caused by when optimized the following DAG, where the WindowJoin node is the breaking point. <img src="https://user-images.githubusercontent.com/55568005/226278182-d5087dc1-562e-46dc-a218-1f3af466b4cf.png"; width="300" height="600"> ## Brief change log - Let `FlinkRelMdWindowProperties` support computing window properties for `StreamPhysicalGlobalWindowAggregate`. ## Verifying this change This change added tests and can be verified as follows: - Add `FlinkRelMdWindowPropertiesTest` to verify the window properties computation on different rel nodes. - Add test under`WindowJoinTest` to verify the case. ## 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, Kubernetes/Yarn, 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 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
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