Thanks Sergey for the great work. I feel doubt about the conclusion that "don't try to load a savepoint from a Java 8/11/17 build due to bummping to scala-2.12.18", since the snapshotted state (operator/keyed state-backend), and most key/value serializer snapshots are generated by pure-java code. The only left part is that the developer uses scala UDF or scala types for key/value types. However, since all user-facing scala APIs have been deprecated [1], I don't think we have so many cases. Maybe we can give descriptions without such strong suggestions.
Please correct me if I am wrong. [1] https://issues.apache.org/jira/browse/FLINK-29740 Best Yun Tang ________________________________ From: Rui Fan <1996fan...@gmail.com> Sent: Wednesday, November 29, 2023 16:43 To: dev@flink.apache.org <dev@flink.apache.org> Subject: Re: [ANNOUNCE] Experimental Java 21 support now available on master Thanks Sergey for the great work! Best, Rui On Wed, Nov 29, 2023 at 4:42 PM Leonard Xu <xbjt...@gmail.com> wrote: > Cool ! > > Thanks Sergey for the great effort and all involved. > > > Best, > Leonard > > > 2023年11月29日 下午4:31，Swapnal Varma <swapnal...@gmail.com> 写道： > > > > Congratulations Sergey, and everyone involved! > > > > Excited to work with and on this! > > > > Best, > > Swapnal > > > > > > On Wed, 29 Nov 2023, 13:58 Sergey Nuyanzin, <snuyan...@gmail.com> wrote: > > > >> The master branch now builds and runs with Java 21 out-of-the-box. > >> > >> Notes: > >> - a nightly cron build was set up. > >> - In Java 21 builds, Scala is being bumped to 2.12.18 > >> which causes incompatibilities within Flink; > >> i.e. don't try to load a savepoint from a Java 8/11/17 build > >> - All the tests that are being skipped on Java 11/17 > >> are also skipped on Java 21. > >> > >> Huge shout-out to everyone participating > >> in review of my Java 21 related PRs > >> > >> If you run into any issues, please report it in FLINK-33163 > >> <https://issues.apache.org/jira/browse/FLINK-33163> . > >> > >> -- > >> Best regards, > >> Sergey > >> > >
