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[Event Hubs Client] Idempotent Error Handling
The focus of these changes is to ensure that the AMQP connection and link states are fully reset on any exception after retries are exhausted in order to ensure no data loss. In error scenarios with ambiguous outcomes, it is possible for the client and service state for idempotent sequencing to become out-of-sync with no way to detect or correct the problem. When this happens, it is possible that events being published are incorrectly identified by the service as duplicates and their receipt acknowledged. This leads the client to signal to callers that publishing was successful, though the events were ignored by the service and will never be available to be read. By resetting the connection and forcing the client to use a new publisher identifier, the service will reset state and perform the initial handshake with the client, ensuring that state is properly synchronized between them.
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