zhuzhurk opened a new pull request, #20082:
URL: https://github.com/apache/flink/pull/20082
## What is the purpose of the change
SpeculativeExecutionVertex will be used if speculative execution is enabled,
as a replacement of ExecutionVertex to form an ExecutionGraph. The core
difference is that a SpeculativeExecutionVertex can have multiple current
executions running at the same time.
## Brief change log
- *Introduce SpeculativeExecutionJobVertex and SpeculativeExecutionVertex*
- *Rework TaskDeploymentDescriptorFactory to accept an execution to deploy*
- *Wait for all the executions to be terminated before finishing a job*
## Verifying this change
- *Added unit tests SpeculativeExecutionVertexTest*
- *Changes are also covered by existing tests of scheduling*
## 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, Kubernetes/Yarn, 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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