tillrohrmann commented on issue #8242: [FLINK-6227][network] Introduce the DataConsumptionException for downstream task failure URL: https://github.com/apache/flink/pull/8242#issuecomment-490055496 I think we actually need to handle case `f` one way or the other. It is not impossible that a `TaskExecutor` completely dies. So we either return a `DataConnectionException` which is handled by the failover strategy or say that after trying to connect to the remote host for some time we fail with a `PartitionNotFoundException`. Of course, it can still be the case that the `TaskExecutor` is reachable afterwards but at some point we simply need to consider the `TaskExecutor` as dead.
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