Divij Vaidya created KAFKA-15485:
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Summary: Upgrade to JDK-21 (LTS release)
Key: KAFKA-15485
URL: https://issues.apache.org/jira/browse/KAFKA-15485
Project: Kafka
Issue Type: Improvement
Reporter: Divij Vaidya
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)
As a stretch goal for this JIRA, we want to:
1. Explore the new features for JDK-21 (like virtual threads) and create
separate Jira tickets to explore their usage for Kafka
[1] [https://github.com/apache/kafka/pull/13840]
[2] [https://github.com/apache/kafka/pull/13582]
[3] [https://github.com/apache/kafka/pull/12948]
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