1996fanrui opened a new pull request, #22983:
URL: https://github.com/apache/flink/pull/22983
## What is the purpose of the change
Fix thread-safe bug of channel state executor when some subtasks are closed
while other subtasks are starting.
## Brief change log
Ensure that update the `isRegistering` and call the `onRegistered` within
one registerLock.
## Verifying this change
Created 2 threads, one thread creates the executor and register subtask, one
thread releases these subtask. This bug can reproduce by the following test .
This change added tests and can be verified as follows:
-
*ChannelStateWriteRequestExecutorFactoryTest#testSomeSubtasksCloseDuringOtherSubtasksStarting*
## 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
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