och5351 opened a new pull request, #28398:
URL: https://github.com/apache/flink/pull/28398
## What is the purpose of the change
Execution.deploy() now creates TaskDeploymentDescriptor asynchronously,
which means the IO executor thread calls jobMasterMainThreadExecutor.execute()
to hand off the work.
The problem is that forMainThread() captures the calling thread at the time
of its creation and asserts inside execute() that only that same thread can
call it.
Since the IO executor thread calls execute() instead, the assertion fires
and throws an AssertionError. This error then bubbles up through the
CompletableFuture chain, flipping the producer vertex into FAILED state, which
causes an IllegalStateException when the consumer vertex tries to read from it.
## Brief change log
Updated buildExecutionGraph() in TaskDeploymentDescriptorFactoryTest to
replace forMainThread() with forSingleThreadExecutor() and add proper async
handling to accommodate the asynchronous TaskDeploymentDescriptor creation in
Execution.deploy().
## Verifying this change
<img width="2626" height="1902" alt="image"
src="https://github.com/user-attachments/assets/78dbdeaa-f8f1-4a1f-b60a-a61c13c99553";
/>
## 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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