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MINOR: add java 8/scala 2.12 deprecation info in doc #12261

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Merged
showuon merged 3 commits into from
Jun 9, 2022
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MINOR: add java 8/scala 2.12 deprecation info in doc #12261

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7db66ac
add java 8 deprecation info in doc
showuon Jun 7, 2022
ad5f8b8
address comments
showuon Jun 8, 2022
d696f60
Grammar tweaks
ijuma Jun 8, 2022
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3 changes: 2 additions & 1 deletion docs/ops.html
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Expand Up @@ -1266,7 +1266,8 @@ <h4 class="anchor-heading"><a id="prodconfig" class="anchor-link"></a><a href="#

<h3 class="anchor-heading"><a id="java" class="anchor-link"></a><a href="#java">6.6 Java Version</a></h3>

Java 8 and Java 11 are supported. Java 11 performs significantly better if TLS is enabled, so it is highly recommended (it also includes a number of other
Java 8, Java 11, and Java 17 are supported. Note that Java 8 support has been deprecated since Apache Kafka 3.0 and will be removed in Apache Kafka 4.0.
Java 11 and later versions perform significantly better if TLS is enabled, so they are highly recommended (they also include a number of other
performance improvements: G1GC, CRC32C, Compact Strings, Thread-Local Handshakes and more).

From a security perspective, we recommend the latest released patch version as older freely available versions have disclosed security vulnerabilities.
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5 changes: 4 additions & 1 deletion docs/upgrade.html
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Expand Up @@ -217,7 +217,10 @@ <h5><a id="upgrade_300_notable" href="#upgrade_300_notable">Notable changes in 3
See <a href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-679%3A+Producer+will+enable+the+strongest+delivery+guarantee+by+default">KIP-679</a> for details.
In 3.0.0 and 3.1.0, a bug prevented the idempotence default from being applied which meant that it remained disabled unless the user had explicitly set
<code>enable.idempotence</code> to true. Note that the bug did not affect the <code>acks=all</code> change. See <a href="https://issues.apache.org/jira/browse/KAFKA-13598">KAFKA-13598</a>for more details.
This issue was fixed and the default is properly applied in 3.0.1, 3.1.1, and 3.2.0.
This issue was fixed and the default is properly applied in 3.0.1, 3.1.1, and 3.2.0.</li>
<li>Java 8 and Scala 2.12 support have been deprecated since Apache Kafka 3.0 and will be removed in Apache Kafka 4.0.
See <a href="https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=181308223">KIP-750</a>
and <a href="https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=181308218">KIP-751</a> for more details.</li>
<li>ZooKeeper has been upgraded to version 3.6.3.</li>
<li>A preview of KRaft mode is available, though upgrading to it from the 2.8 Early Access release is not possible. See
the <code>config/kraft/README.md</code> file for details.</li>
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