shuai-xu opened a new pull request #8486: [FLINK-12372] [runtime] implement ExecutionSlotAllocator URL: https://github.com/apache/flink/pull/8486 ## What is the purpose of the change *This pull request introduces the ExecutionSlotAllocator interface related classes and a default implementation. The implementation of ExecutionSlotAllocator will first calculate the preferred locations for the executions and then allocate slots for them. In the future, the calculation of preferred locations will be removed from here to make the ExecutionSlotAllocator more clean.* ## Verifying this change This change added tests and can be verified as follows: - *Added unit tests in DefaultExecutionSlotAllocatorTest* ## 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? ( no) - If yes, how is the feature documented? (not applicable)
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