hachikuji commented on a change in pull request #9284:
URL: https://github.com/apache/kafka/pull/9284#discussion_r496287274
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File path: docs/upgrade.html
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@@ -27,6 +27,14 @@ <h5><a id="upgrade_270_notable"
href="#upgrade_270_notable">Notable changes in 2
<code>default.api.timeout.ms</code>, and Kafka Streams' new
<code>task.timeout.ms</code> parameters instead.
Note that parameter <code>retry.backoff.ms</code> is not impacted by
this change.
</li>
+ <li>Altering non-reconfigurable configs of existent listeners causes
<code>InvalidRequestException</code>.
+ By contrast, the previous behavior would have caused the updated
configuration to be persisted, but it wouldn't
+ take effect until the broker was restarted. This change breaks
behavior compatibility but the old behavior is not
Review comment:
nit: can we take out the sentence about behavior compatibility. I think
it is enough to say that the previous behavior was unintended.
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