ifndef-SleePy opened a new pull request, #21773:
URL: https://github.com/apache/flink/pull/21773
## What is the purpose of the change
*This pull request introduces a way to enable speculative execution for
`SinkFunction`*
## Brief change log
- *Speculative execution would be enabled if a `SinkFunction` inherits
`SupportsConcurrentExecutionAttempts`*
## Verifying this change
This change added tests:
- *Add new test cases in `StreamingJobGraphGeneratorTest`*
- *Add new test cases in `SpeculativeSchedulerITCase`*
## 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, Kubernetes/Yarn, 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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