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# [2] 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 On Thu, Mar 23, 2017 at 2:42 PM, Theodore Vasiloudis < 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> > 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> 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> 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> >>> 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> >>>> wrote: >>>> >>>>> I've put it also on our Twitter account: >>>>> https://twitter.com/ApacheFlink/status/842015062667755521 >>>>> >>>>> On Wed, Mar 15, 2017 at 2:19 PM, Martin Neumann <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 >>>>> > (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> >>>>> > Sent: Wednesday, March 15, 2017 12:30:24 PM >>>>> > To: u...@flink.apache.org; 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 >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> >>>> >>>> >>> >>> >> >
