Is this not two different issues? - adding builds for Scala 2.12 - upgrading to Java version 1.8
It may be time to switch, but I haven’t seen anything in FLINK-5005 which prevents simply adding Scala 2.12 to our supported build matrix and continuing to build 2.10 / 2.11 against Java 1.7. Greg > On Jun 8, 2017, at 11:39 AM, Robert Metzger <rmetz...@apache.org> wrote: > > Hi all, > > as promised in March, I want to revive this discussion! > > Our users are begging for Scala 2.12 support [1], migration to Akka 2.4 would > solve a bunch of shading / dependency issues (Akka 2.4 will remove Akka's > protobuf dependency [2][3]) and generally Java 8's new language features all > speak for dropping Java 7. > > Java 8 has been released in March, 2014. Java 7 is unsupported since June > 2016. > > So what's the feeling in the community regarding the step? > > > [1] https://issues.apache.org/jira/browse/FLINK-5005# > <https://issues.apache.org/jira/browse/FLINK-5005#> > [2] https://issues.apache.org/jira/browse/FLINK-5989 > <https://issues.apache.org/jira/browse/FLINK-5989> > [3] > https://issues.apache.org/jira/browse/FLINK-3211?focusedCommentId=15274018&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15274018 > > <https://issues.apache.org/jira/browse/FLINK-3211?focusedCommentId=15274018&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15274018> > > > On Thu, Mar 23, 2017 at 2:42 PM, Theodore Vasiloudis > <theodoros.vasilou...@gmail.com <mailto:theodoros.vasilou...@gmail.com>> > wrote: > Hello all, > > I'm sure you've considered this already, but what this data does not include > is all the potential future users, > i.e. slower moving organizations (banks etc.) which could be on Java 7 still. > > Whether those are relevant is up for debate. > > Cheers, > Theo > > On Thu, Mar 23, 2017 at 12:14 PM, Robert Metzger <rmetz...@apache.org > <mailto:rmetz...@apache.org>> wrote: > Yeah, you are right :) > I'll put something in my calendar for end of May. > > On Thu, Mar 23, 2017 at 12:12 PM, Greg Hogan <c...@greghogan.com > <mailto:c...@greghogan.com>> wrote: > Robert, > > Thanks for the report. Shouldn’t we be revisiting this decision at the > beginning of the new release cycle rather than near the end? There is > currently little cost to staying with Java 7 since no Flink code or pull > requests have been written for Java 8. > > Greg > > > >> On Mar 23, 2017, at 6:37 AM, Robert Metzger <rmetz...@apache.org >> <mailto:rmetz...@apache.org>> wrote: >> >> Looks like 9% on twitter and 24% on the mailing list are still using Java 7. >> >> I would vote to keep supporting Java 7 for Flink 1.3 and then revisit once >> we are approaching 1.4 in September. >> >> On Thu, Mar 16, 2017 at 8:00 AM, Bowen Li <bowen...@offerupnow.com >> <mailto:bowen...@offerupnow.com>> wrote: >> There's always a tradeoff we need to make. I'm in favor of upgrading to Java >> 8 to bring in all new Java features. >> >> The common way I've seen (and I agree) other software upgrading major things >> like this is 1) upgrade for next big release without backward compatibility >> and notify everyone 2) maintain and patch current, old-tech compatible >> version at a reasonably limited scope. Building backward compatibility is >> too much for an open sourced project >> >> >> >> On Wed, Mar 15, 2017 at 7:10 AM, Robert Metzger <rmetz...@apache.org >> <mailto:rmetz...@apache.org>> wrote: >> I've put it also on our Twitter account: >> https://twitter.com/ApacheFlink/status/842015062667755521 >> <https://twitter.com/ApacheFlink/status/842015062667755521> >> >> On Wed, Mar 15, 2017 at 2:19 PM, Martin Neumann <martin.neum...@ri.se >> <mailto:martin.neum...@ri.se>> >> wrote: >> >> > I think this easier done in a straw poll than in an email conversation. >> > I created one at: http://www.strawpoll.me/12535073 >> > <http://www.strawpoll.me/12535073> >> > (Note that you have multiple choices.) >> > >> > >> > Though I prefer Java 8 most of the time I have to work on Java 7. A lot of >> > the infrastructure I work on still runs Java 7, one of the companies I >> > build a prototype for a while back just updated to Java 7 2 years ago. I >> > doubt we can ditch Java 7 support any time soon if we want to make it easy >> > for companies to use Flink. >> > >> > cheers Martin >> > >> > //PS sorry if this gets sent twice, we just migrated to a new mail system >> > and a lot of things are broken >> > >> > ________________________________ >> > From: Stephan Ewen <se...@apache.org <mailto:se...@apache.org>> >> > Sent: Wednesday, March 15, 2017 12:30:24 PM >> > To: u...@flink.apache.org <mailto:u...@flink.apache.org>; >> > dev@flink.apache.org <mailto:dev@flink.apache.org> >> > Subject: [POLL] Who still uses Java 7 with Flink ? >> > >> > Hi all! >> > >> > I would like to get a feeling how much Java 7 is still being used among >> > Flink users. >> > >> > At some point, it would be great to drop Java 7 support and make use of >> > Java 8's new features, but first we would need to get a feeling how much >> > Java 7 is still used. >> > >> > Would be happy if users on Java 7 respond here, or even users that have >> > some insights into how widespread they think Java 7 still is. >> > >> > Thanks, >> > Stephan >> > >> > >> > >> > >> > >> >> > > > >
