Nikita-Shupletsov commented on code in PR #20779:
URL: https://github.com/apache/kafka/pull/20779#discussion_r2492224467
##########
docs/streams/upgrade-guide.html:
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@@ -108,6 +108,35 @@ <h3 class="anchor-heading"><a id="streams_notable_changes"
class="anchor-link"><
<p>Since 2.6.0 release, Kafka Streams depends on a RocksDB version that
requires MacOS 10.14 or higher.</p>
+ <h3><a id="streams_api_changes_420"
href="#streams_api_changes_420">Streams API changes in 4.2.0</a></h3>
+
+ <p>
+ Kafka Streams now supports Dead Letter Queue (DLQ).
+ A new config <code>errors.deadletterqueue.topic.name</code> allows to
specify the name of the DLQ topic. When set and
<code>DefaultProductionExceptionHandler</code> is used, records that cause
exceptions will be forwarded to the DLQ topic.
+ If a custom exception handler is used, it is up to the custom handler
to build DLQ records to send, in this case, the
<code>errors.deadletterqueue.topic.name</code> configuration has no impact.
Review Comment:
https://issues.apache.org/jira/browse/KAFKA-19863
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