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Currently, the transactional producer.send returns retriable exception types, such as TimeoutException , which poses a risk of duplicates in Kafka. In this KIP, we will update the transactional producer.send path such that all retriable exceptions will be translated to TransactionAbortableException in transaction producer code path. Older clients that are using the transactional producer and handling TimeoutException  by retrying the produce operation can update to handle TransactionAbortableException .

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