zhuzhurk opened a new pull request #9797: [FLINK-14059][core] Introduce option allVerticesInSameSlotSharingGroupByDefault in ExecutionConfig URL: https://github.com/apache/flink/pull/9797 ## What is the purpose of the change This PR is to introduce option allVerticesInSameSlotSharingGroupByDefault in ExecutionConfig. It's true by default for DataSet and streaming jobs so that tasks can be scheduled with slots not fewer than the max parallelism. It's false for blink batch jobs so that vertices can we can have finer resource planning regarding pipelined regions. ## Brief change log *(for example:)* - *Introduced option allVerticesInSameSlotSharingGroupByDefault in ExecutionConfig. The default value is true.* - *Set the option to false for blink batch jobs* ## Verifying this change - *Added unit tests for blink batch job generation* ## 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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