Hi Anuj, 1. JDK17 support: I have no idea why Java 17 support is "expreimental", but we've been using JDK17 in production for a while and no major issues found. 2. End of support timeline Flink 1.20 LTS release: 1.20 will be supported for approximately two years [1][2].
[1] https://lists.apache.org/thread/qvw66of180t3425pnqf2mlx042zhlgnn [2] https://cwiki.apache.org/confluence/display/FLINK/FLIP-458%3A+Long-Term+Support+for+the+Final+Release+of+Apache+Flink+1.x+Line Best, Zhanghao Chen ________________________________ From: Anuj Jain <anuj...@gmail.com> Sent: Sunday, January 5, 2025 20:27 To: Xuyang <xyzhong...@163.com> Cc: user@flink.apache.org <user@flink.apache.org> Subject: Re: Java 17 support in Flink Hi Community, Any suggestions on these queries. Regards Anuj On Mon, Dec 23, 2024 at 8:10 AM Anuj Jain <anuj...@gmail.com<mailto:anuj...@gmail.com>> wrote: Hi, Please suggest if 1. Flink 2.0 will have experimental or full support of Java 17. If it is experimental, any idea in which 2.x release Java 17 support is targeted. I referred to the following page which mentioned default Java 11 but experimental support of Java 17. So wanted to know, if we should use Java 17 will Flink 2.0 https://nightlies.apache.org/flink/flink-docs-release-2.0-preview1/docs/deployment/java_compatibility/#java-17 2. What will be the end of support timeline Flink 1.20 LTS release. Regards Anuj On Wed, Dec 18, 2024 at 9:04 AM Anuj Jain <anuj...@gmail.com<mailto:anuj...@gmail.com>> wrote: Hi, Thanks for the response. Requesting some clarification here - Flink 2.0 would have Java 11 set as default version but can i compile and deploy/run my Flink applications with Java 17. Will it be a supported deployment? I checked from the documentation https://nightlies.apache.org/flink/flink-docs-release-2.0-preview1/docs/deployment/java_compatibility/#java-17 Does Flink 2.0 have experimental support for Java 17 ? If yes, any plans to introduce Java 17 as a supported platform for Flink in future ? Regards Anuj On Wed, Dec 18, 2024 at 8:11 AM Xuyang <xyzhong...@163.com<mailto:xyzhong...@163.com>> wrote: Hi, Anuj. Share some of what I know. As far as I know, flink 1.20, being an LTS release, will focus solely on fixing critical bugs without introducing any changes related to JDK. In flink 2.0, support for JDK 8 will be dropped, and JDK 11 will be set as the default version. By the way, there was earlier discussion about dropping support for both JDK 8 and JDK 11 in version 2.0, with JDK 17 set as the new default version; however, this was put on hold for certain reasons. For more details, please refer to 2.0-release[1]. [1] https://cwiki.apache.org/confluence/display/FLINK/2.0+Release#id-2.0Release-TimelinePlan -- Best！ Xuyang At 2024-12-17 15:42:54, "Anuj Jain" <anuj...@gmail.com<mailto:anuj...@gmail.com>> wrote: Hi, Will Flink 2.0 support Open JDK - Java 17 ? And Is there any plan for adding Java 17 support in the Flink 1.x series ? All I could see in the documentation is that Java 17 experimental support is there. Thanks in advance for any help !! Regards Anuj
