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MINOR: update 4.1 docs with 4.1.1 notable changes #20742

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Oct 21, 2025
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MINOR: update 4.1 docs with 4.1.1 notable changes #20742

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11 changes: 11 additions & 0 deletions docs/upgrade.html
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Expand Up @@ -19,6 +19,17 @@

<script id="upgrade-template" type="text/x-handlebars-template">

<h4><a id="upgrade_4_1_1" href="#upgrade_4_1_0">Upgrading to 4.1.1</a></h4>
<h5><a id="upgrade_4_1_1_notable" href="#upgrade_4_1_1_notable">Notable changes in 4.1.1</a></h5>
<ul>
<li>
Includes a fix for the critical Kafka Streams bug (<a href="https://issues.apache.org/jira/browse/KAFKA-19748">KAFKA-19748</a>), solving the memory leak issues that affected users of range scans and certain DSL operators (session windows, sliding windows, stream-stream joins, foreign-key joins).
</li>
<li>
Includes a fix for the critical Kafka Streams bug (<a href="https://issues.apache.org/jira/browse/KAFKA-19479">KAFKA-19479</a>), related to potential data loss.
</li>
</ul>

<h4><a id="upgrade_4_1_0" href="#upgrade_4_1_0">Upgrading to 4.1.0</a></h4>

<h5><a id="upgrade_4_1_0" href="#upgrade_4_1_0">Upgrading Servers to 4.1.0 from any version 3.3.x through 4.0.x</a></h5>
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