godfreyhe opened a new pull request #7834: [FLINK-11715][table-planner-blink] Add optimize program to organize optimization phases URL: https://github.com/apache/flink/pull/7834 ## What is the purpose of the change This commit adds optimize program to organize optimization phases. Currently, Flink organizes the optimization phases by different methods in Batch(Stream)TableEnvironment#optimize. However this is not easy to extend especially there are more than ten optimization stages in Blink. So in Blink, each optimization stage is abstracted into a FlinkOptimizeProgram, and FlinkChainedPrograms is responsible for organizing all the programs. ## Brief change log -*Adds FlinkOptimizeProgram interface, and its common subclasses: FlinkRuleSetProgram, FlinkHepRuleSetProgram, FlinkVolcanoProgram, FlinkGroupProgram* -*Adds FlinkChainedPrograms for organizing all the programs* ## Verifying this change This change added tests and can be verified as follows: - *Added test that validates all operations to build a FlinkOptimizeProgram and FlinkChainedPrograms* ## 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? (yes) - If yes, how is the feature documented? (JavaDocs)
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