@RunLLM Java 21 is the recommended JDK version since

branch-4.0 is it true?

No, Java 21 is not the recommended JDK version for Apache Pulsar branch-4.0. For Pulsar 3.0.x and 4.0.x, Java 17 is supported and recommended, but Java 21 is only recommended for 3.3.x and newer. Java 21 support and recommendation start with Pulsar 3.3.x and above, while 4.0.x still primarily targets Java 17, though newer Docker images may include Java 21 for convenience. See the discussion in this issue and this pull request. Would you like more detail on Java version compatibility for other Pulsar branches? Sources: - https://github.com/apache/pulsar/issues/24816 - https://github.com/apache/pulsar/pull/22875 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@sindhushree Yes, Java 21 is recommended at runtime since Pulsar 3.3.x. The default docker image uses Java 21 since Pulsar 3.3.x.