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https://issues.apache.org/jira/browse/KAFKA-18579?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kaushik Raina resolved KAFKA-18579.
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Resolution: Fixed
> Add TransactionAbortableException instruction in docs
> -----------------------------------------------------
>
> Key: KAFKA-18579
> URL: https://issues.apache.org/jira/browse/KAFKA-18579
> Project: Kafka
> Issue Type: Improvement
> Components: documentation, website
> Reporter: Kaushik Raina
> Assignee: Kaushik Raina
> Priority: Minor
> Labels: newbie
> Fix For: 4.1.0
>
>
> * In
> [KIP-890|https://cwiki.apache.org/confluence/display/KAFKA/KIP-890%3A+Transactions+Server-Side+Defense]
> we introduced `TransactionAbortableException`. Transaction producer can
> throw both `TimeoutException` or `TransactionAbortableException`.
> * Applications using should handle TimeoutException from transaction
> producer as abortable because it’s not safe to retry the produce. Retrying
> would assign new sequence numbers to the messages, and if the original
> message had actually succeeded, the new messages would become duplicates,
> breaking exactly-once semantics. Details:
> [https://lists.apache.org/thread/ox2dm8n9hpzwj0qo53ssm3ncl8f7cjso]
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