azagrebin opened a new pull request #6989: [FLINK-10455][Kafka Tx] Close transactional producers in case of failure and termination URL: https://github.com/apache/flink/pull/6989 ## What is the purpose of the change This PR addresses the problem of potential leak of resources associated with unclosed Kafka transactional producers in case of commitment failure or task shutdown. ## Brief change log - always close producer even if commit fails in TwoPhaseCommitSinkFunction. notifyCheckpointComplete - close pending transactions in close method of Kafka Flink function in case of task shutdown - continue trying to commit other transactions in TwoPhaseCommitSinkFunction. notifyCheckpointComplete if any of them failed ## Verifying this change existing tests ## 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, Yarn/Mesos, ZooKeeper: (yes) - 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)
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