pnowojski opened a new pull request #11403: [FLINK-16316][operators] Implement new StreamOperatorBase as a replacement for AbstractStreamOperator URL: https://github.com/apache/flink/pull/11403 Implement new StreamOperatorBase as a replacement for AbstractStreamOperator The new base class for operators tries to address couple of limitations in the AbstractStreamOperator like: - lack of support for multiple inputs - setup(...) method ## Brief change log Please check individual commit messages. ## Verifying this change This change is cover by existing tests and adds couple of new ones where necessary. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (yes / **no**) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (**yes** / no) - The serializers: (yes / **no** / don't know) - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: (yes / **no** / don't know) - The S3 file system connector: (yes / **no** / don't know) ## Documentation - Does this pull request introduce a new feature? (**yes** / no) - If yes, how is the feature documented? (not applicable / docs / **JavaDocs** / not documented)
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