azagrebin opened a new pull request #9038: [FLINK-13169][tests][coordination] IT test for fine-grained recovery (task executor failures) URL: https://github.com/apache/flink/pull/9038 ## What is the purpose of the change The `BatchFineGrainedRecoveryITCase` can be extended with an additional test failure strategy which abruptly shuts down the task executor. This leads to the loss of all previously completed and the in-progress mapper result partitions. The fail-over strategy should restart the current in-progress mapper which will get the `PartitionNotFoundException` because the previous result becomes unavailable and the previous mapper has to be restarted as well. The same should happen subsequently with all previous mappers. When the source is recomputed, all mappers has to be restarted again to recalculate their lost results. ## Brief change log Extend `BatchFineGrainedRecoveryITCase` with the `RandomTaskExecutorFailureStrategy`. ## Verifying this change Run `BatchFineGrainedRecoveryITCase`. ## 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: (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)
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