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Add TransactionAbortableException and Timeout Exception handling instruction in docs (#18942) 

Add instruction for handing TransactionAbortableException and TimeoutException at application side.

Reviewers: Justine Olshan <jolshan@confluent.io>
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Kaushik Raina 2025-02-19 22:45:47 +05:30 committed by GitHub
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@ -371,6 +371,14 @@
timestamp of more than 1 hour in the future will be rejected when message.timestamp.type=CreateTime is set. timestamp of more than 1 hour in the future will be rejected when message.timestamp.type=CreateTime is set.
See <a href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-1030%3A+Change+constraints+and+default+values+for+various+configurations">KIP-1030</a> See <a href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-1030%3A+Change+constraints+and+default+values+for+various+configurations">KIP-1030</a>
</li> </li>
<li>Introduced in KIP-890, the <code>TransactionAbortableException</code> enhances error handling within transactional operations by clearly indicating scenarios where transactions should be aborted due to errors. It is important for applications to properly manage both <code>TimeoutException</code> and <code>TransactionAbortableException</code> when working with transaction producers.</li>
<ul>
<li><b>TimeoutException:</b> This exception indicates that a transactional operation has timed out. Given the risk of message duplication that can arise from retrying operations after a timeout (potentially violating exactly-once semantics), applications should treat timeouts as reasons to abort the ongoing transaction.</li>
<li><b>TransactionAbortableException:</b> Specifically introduced to signal errors that should lead to transaction abortion, ensuring this exception is properly handled is critical for maintaining the integrity of transactional processing.</li>
<li>To ensure seamless operation and compatibility with future Kafka versions, developers are encouraged to update their error-handling logic to treat both exceptions as triggers for aborting transactions. This approach is pivotal for preserving exactly-once semantics.</li>
<li> See <a href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-890%3A+Transactions+Server-Side+Defense">KIP-890</a> and
<a href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-1050%3A+Consistent+error+handling+for+Transactions">KIP-1050</a> for more details </li>
</ul>
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</li> </li>
</ul> </ul>