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Subject [GitHub] [flink] kl0u opened a new pull request #13635: [FLINK-19572][FLINK-19573] Port Two and MultiInputTransformation to Translator framework
Date Wed, 14 Oct 2020 12:06:08 GMT

kl0u opened a new pull request #13635:
URL: https://github.com/apache/flink/pull/13635

   ## What is the purpose of the change
   Currently, the `StreamGraphGenerator` is responsible for:
   1. traversing the graph of `Transformations`
   2. translating them to their runtime implementations
   With the addition of the `TransformationTranslator` framework in [FLINK-19485](https://issues.apache.org/jira/browse/FLINK-19485),
we can now pull the translation logic out of the `StreamGraphGenerator` and put it into dedicated
translators, one for each type of transformation.
   This PR does so for the `TwoInputTransformation` and the `MultiInputTransformation`.
   ## Brief change log
   The changes are in the `StreamGraphGenerator` and the two new `TransformationTranslator`
   ## Verifying this change
   This change is mainly a code refactoring so it is expected to be covered by existing unit
and e2e tests.
   ## 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

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