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KAFKA-18674: Document the incompatible changes in parsing --bootstrap-server #18751

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KAFKA-18674: Document the incompatible changes in parsing --bootstrap-server #18751

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Update upgrade.html
mingyen066 Jan 30, 2025
e0d2951
enhance description
mingyen066 Jan 30, 2025
9f35f44
enhance description
mingyen066 Jan 30, 2025
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3 changes: 3 additions & 0 deletions docs/upgrade.html
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Expand Up @@ -85,6 +85,9 @@ <h5><a id="upgrade_400_notable" href="#upgrade_400_notable">Notable changes in 4
<li>The default properties files for KRaft mode are no longer stored in the separate <code>config/kraft</code> directory since Zookeeper has been removed. These files have been consolidated with other configuration files.
Now all configuration files are in <code>config</code> directory.
</li>
<li>The valid format for <code>--bootstrap-server</code> only supports comma-separated value, such as <code>host1:port1,host2:port2,...</code>.
Providing other formats, like space-separated bootstrap servers (e.g., <code>host1:port1 host2:port2 host3:port3</code>), will result in an exception, even though this was allowed in Apache Kafka versions prior to 4.0.
</li>
</ul>
</li>
<li><b>Broker</b>
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