lindong28 opened a new pull request #15633: URL: https://github.com/apache/flink/pull/15633
## Contribution Checklist This PR updated NetworkFailureHandler to prevent closeOnFlush() from being called recursively. The test might hang indefinitely without this change. ## Brief change log This PR updated NetworkFailureHandler to prevent closeOnFlush() from being called recursively. ## Verifying this change Verified that INFO level log would be printed by running `mvn test -Dtest=KafkaSourceLegacyITCase`. ## 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/Mesos, ZooKeeper: (no) - The S3 file system connector: (no) ## Documentation - Does this pull request introduce a new feature? (no) - If yes, how is the feature documented? (not applicable) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org