+1 for setting the Java8 requirement on server side. *Client side.* I'd like the idea of the setting the requirement on client side too without introducing anything Java8 specific. I'm not planning to use Java8 features right on, just thinking of opening the gates would be useful in the long run.
Additionally, I don't see heavy development on the client side. Users who are tightly coupled to Java7 are still able to use existing clients as long as we introduce something breaking which they're forced to upgrade to for whatever reason. I'm not sure what are the odds of that to happen. Andor On Fri, Feb 16, 2018 at 12:31 PM, Flavio Junqueira <f...@apache.org> wrote: > We have this section in the admin doc that talks about the system > requirements: > > https://zookeeper.apache.org/doc/r3.5.3-beta/zookeeperAdmin.html#sc_ > requiredSoftware <https://zookeeper.apache.org/doc/r3.5.3-beta/ > zookeeperAdmin.html#sc_requiredSoftware> > > If we change, then we have to update that section. Specifically about > client and server, I'd think that there is no problem with requiring Java 8 > on the server. The potential concern is with the client as it affects > applications that build against it. It would be best to not force > applications to upgrade themselves. Looking at the compatibility guide for > Java 8: > > http://www.oracle.com/technetwork/java/javase/8- > compatibility-guide-2156366.html <http://www.oracle.com/ > technetwork/java/javase/8-compatibility-guide-2156366.html> > > The risk is that an application is strictly using Java 7 because of some > incompatibility listed in that guide, in which case, it wouldn't be able to > compile the ZK client assuming we get it to use some Java 8 construct. One > option is that we raise the requirement to Java 8, but we do no really > introduce anything that breaks compatibility for the next version. Users > should take this as a warning that they need to migrate to Java 8. I'm not > sure this makes the situation any better, though. Another option is that we > set a release to be the one in which we migrate and let everyone know that > they need to migrate. > > -Flavio > > > > On 16 Feb 2018, at 12:05, Andor Molnar <an...@cloudera.com> wrote: > > > > Hi all, > > > > I think it would be nice to draw a line at branch-3.5 and target Java > > version 8 onwards. It seems to be a good opportunity for the upgrade > before > > we release a stable version of 3.5. > > > > The benefit would be the ability to use new features of Java 8 in the > code: > > > > Do think it's feasible? > > > > Regards, > > Andor > >
