zhijiangW opened a new pull request #8242: [FLINK-6227][network] Introduce the DataConsumptionException for downstream task failure URL: https://github.com/apache/flink/pull/8242 ## What is the purpose of the change *It is part of FLIP-1.* *We define a new special exception to indicate the downstream task failure in consuming upstream data. This special exception is reported to `JobMaster` as a hint for unavailable partition data, and then `JobMaster` could track the upstream executions to restart for reproducing the partition data.* ## Brief change log - *Introduce the new class `DataConsumptionException`* - *Adjust the related processes in `LocalInputChannel` and `RemoteInputChannel` for wrapping the `DataConsumptionException`* - *Fix related tests to verify the `DataConsumptionException`* ## Verifying this change - *Added new unit tests in `LocalInputChannelTest`* - *Added new unit tests in `RemoteInputChannelTest`* - *Added new unit tests in `ClientTransportErrorHandlingTest` for verifying the channel inactive case* ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (yes / **no**) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**) - The serializers: (yes / **no** / don't know) - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know) - The S3 file system connector: (yes / **no** / don't know) ## Documentation - Does this pull request introduce a new feature? (yes / **no**) - If yes, how is the feature documented? (**not applicable** / docs / JavaDocs / not documented)
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