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https://issues.apache.org/jira/browse/KAFKA-15485?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17768590#comment-17768590
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Divij Vaidya commented on KAFKA-15485:
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Thank you for picking this up [~bmscomp]
> Support building with Java 21 (LTS release)
> -------------------------------------------
>
> Key: KAFKA-15485
> URL: https://issues.apache.org/jira/browse/KAFKA-15485
> Project: Kafka
> Issue Type: Improvement
> Reporter: Divij Vaidya
> Assignee: Ismael Juma
> Priority: Major
> Fix For: 3.7.0
>
>
> JDK-21 is the latest LTS release which reached GA on 19th Sept 2023. This
> ticket aims to upgrade JDK used by Kafka to JDK-21 (currently it's JDK20).
> Thanks to proactive work done by [~ijuma] earlier [1][2][3], I do not
> anticipate major hiccups while upgrading to JDK-21.
> As part of this JIRA we want to:
> 1. Upgrade Kafka to JDK 21
> 2. Replace the CI build for JDK 20 with JDK 21 (similar to [3] below)
> 3. Update the README (see[4]) to mention Kafka's support for JDK-21
> [1] [https://github.com/apache/kafka/pull/13840]
> [2] [https://github.com/apache/kafka/pull/13582]
> [3] [https://github.com/apache/kafka/pull/12948]
> [4] [https://github.com/apache/kafka/pull/14061]
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