On behalf of the Ubuntu Foundations Team, I am requesting an SRU exception for OpenJDK. Our plan is to release OpenJDK 10 as the default JRE/JDK  for Bionic, and then move the default JRE/JDK in main to OpenJDK 11 in September/October 2018 as an SRU.
= Proposed Plan = Bionic will be released with OpenJDK 10 as the default JRE/JDK and OpenJDK 11 will replace it once it reaches GA. OpenJDK 8 will be moved to universe and remain available there for 18.04, to provide migration time for packages that can't be build with OpenJDK 10 or 11. OpenJDK 8 will remain in main in 16.04 LTS (which reaches EOL in April 2021). = Rationale = Oracle will end upstream security support for OpenJDK 8 in September 2018 . Red Hat has indicated that they will provide support until October 2020 [3,4]. Canonical is committed to working with fellow distributors of OpenJDK 8 to provide security support through the end of Ubuntu 16.04 LTS’s supported lifecycle in April 2021, but would prefer not to extend its maintenance costs a further two years beyond this by including OpenJDK 8 in main in Bionic. Meanwhile, the OpenJDK project has moved to a 6-month release cycle with an LTS version every 3 years . The first LTS version is OpenJDK 11, to be released on September 2018 and supported by Oracle until September 2021. Since it is an LTS release, we expect the OpenJDK community will align around this version to extend support beyond the end of Oracle’s security support period. If we are going to switch to OpenJDK 11 in bionic once released, we want to avoid OpenJDK 8 as the default JRE/JDK in Bionic at release time because any additional interface delta that exists between 8 and 11 not only exposes the archive to breakage, it also exposes external consumers of the JDK to breakage. In comparison, the interface delta between OpenJDK 10 and OpenJDK 11 is expected to be fairly small, especially in comparison with the delta between OpenJDK 8 and OpenJDK 9 that we already know is large. We should therefore release with OpenJDK 10 as the default JDK in 18.04, transitioning to OpenJDK 11 when it is released. = Technical details = There are 24 packages in bionic/main with a build dependency on OpenJDK 8 (the current default-jdk). Of these there are 8 FTBFS with default-jdk set to openjdk-9 and 10 FTBFS with default-jdk set to openjdk-10. These will be fixed before Bionic’s release. = Affected packages in main = $ sort -u \ <(reverse-depends -b -r bionic -c main -l default-jdk) \ <(reverse-depends -b -r bionic -c main -l default-jdk-headless) apport automake-1.15 awstats brltty ca-certificates-java ceph commons-pool db5.3 erlang gettext hsqldb1.8.0 java-atk-wrapper libcommons-collections3-java libcommons-dbcp-java liblouisutdml libphonenumber libreoffice libreoffice-l10n lintian protobuf sonic taglibs-standard tomcat8 xapian-bindings = Other = I made a timeline to visualize the release and EOL dates of OpenJDK and Ubuntu . Debian is also affected by the new OpenJDK release cycle . Regards, Tiago  Default JRE/JDK as in packages default-jre and default-jdk (as well as the associated -headless packages)  http://www.oracle.com/technetwork/java/eol-135779.html Note: do not confuse the Oracle proprietary JDK support dates with the OpenJDK support they provide, the proprietary support runs longer by a couple/few years.  http://mail.openjdk.java.net/pipermail/jdk-dev/2017-November/000175.html  https://access.redhat.com/articles/1299013  https://time.graphics/line/39488  https://lists.debian.org/debian-java/2017/11/msg00028.html -- Tiago Stürmer Daitx Software Engineer tiago.da...@canonical.com PGP Key: 4096R/F5B213BE (hkp://keyserver.ubuntu.com) Fingerprint = 45D0 FE5A 8109 1E91 866E 8CA4 1931 8D5E F5B2 13BE -- Ubuntu-release mailing list Ubuntufirstname.lastname@example.org Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-release