[GitHub] godfreyhe opened a new pull request #7834: [FLINK-11715][table-planner-blink] Add optimize program to organize optimization phases

[GitBox <gi...@apache.org>]

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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