SEPURI-SAI-KRISHNA opened a new pull request, #29194:
URL: https://github.com/apache/flink/pull/29194
## What is the purpose of the change
`testReleaseLockWhenFailedToSubmitOperation` fails on CI with a
`RejectedExecutionException` at its final `submitOperation`. The first
operation turns `FINISHED` on its pool thread, before that thread is back in
the pool, and the pool hands work off through a `SynchronousQueue`. A submit
right after `awaitOperationTermination` can therefore still find no free thread.
## Brief change log
- Retry the final submit until the pool accepts it. Any other exception
still fails the test.
## Verifying this change
- With a delay injected after the first operation completes, the old test
fails every time with the CI error, and the new test passes.
- With the lock release on rejection removed, the new test hangs as the old
one did, so it still guards the lock.
- `SqlGatewayServiceITCase` passes.
## 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? **no**
---
##### Was generative AI tooling used to co-author this PR?
- [X] Yes (please specify the tool below)
Generated-by: Claude Code (Opus 5)
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