[GitHub] [flink] kl0u opened a new pull request #10475: [FLINK-15118][FLINK-15119][FLINK-15120] Make flink-scala-shell use Executors

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

kl0u opened a new pull request #10475: [FLINK-15118][FLINK-15119][FLINK-15120] Make flink-scala-shell use Executors
URL: https://github.com/apache/flink/pull/10475
 
 
   ## What is the purpose of the change
   
   This PR makes the `scala-shell` use the newly introduced `Executors` instead of the old `PlanExecutor`. The changelog mainly includes the partial rewriting of the `FlinkShell` and that of the `ScalaShell(Stream)Environment`.
   
   ## Verifying this change
   
   This change is covered by existing tests and it was also verified by manually running examples on Yarn.
   
   ## 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, 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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