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The following commit(s) were added to refs/heads/4.0 by this push:
new 614643675de KAFKA-18422 add link of KIP-1124 to "rolling upgrade"
section (#19097)
614643675de is described below
commit 614643675de24e2cf39c29dd8bab4d42a022800b
Author: Kuan-Po Tseng <[email protected]>
AuthorDate: Wed Mar 5 01:14:21 2025 +0800
KAFKA-18422 add link of KIP-1124 to "rolling upgrade" section (#19097)
Add client upgrade documentation, for more information, please refer to
https://cwiki.apache.org/confluence/x/y4kgF
Reviewers: TengYao Chi <[email protected]>, Chia-Ping Tsai
<[email protected]>
---
docs/upgrade.html | 3 +++
1 file changed, 3 insertions(+)
diff --git a/docs/upgrade.html b/docs/upgrade.html
index 6fc852991a4..8b90d8f827a 100644
--- a/docs/upgrade.html
+++ b/docs/upgrade.html
@@ -36,6 +36,9 @@
Every <a
href="https://github.com/apache/kafka/blob/trunk/server-common/src/main/java/org/apache/kafka/server/common/MetadataVersion.java";>MetadataVersion</a>
has a boolean parameter that indicates if there are metadata changes
(i.e. <code>IBP_4_0_IV1(23, "4.0", "IV1", true)</code> means this version has
metadata changes).
Given your current and target versions, a downgrade is only possible
if there are no metadata changes in the versions between.</li>
+ <li>For the Kafka client upgrade path, note that many deprecated APIs were
removed in Kafka 4.0. Additionally, upgrading directly to 4.x from certain
versions is not feasible.
+ For more information, please refer to <a
href="https://cwiki.apache.org/confluence/x/y4kgF";>KIP-1124</a>.
+ </li>
</ol>
<h5><a id="upgrade_400_notable" href="#upgrade_400_notable">Notable
changes in 4.0.0</a></h5>
