I also mentioned Apache Parquet and haven't seen someone mentioned if/when Apache Parquet would transition.
On Fri, May 17, 2024 at 9:07 AM Dane Pitkin <dpit...@apache.org> wrote: > Fokko, thank you for these datapoints! It's great to see how other low > level Java OSS projects are approaching this. > > JB, I believe yes we have formal consensus to drop Java 8 in Arrow. There > was no contention in current discussions across [GitHub issues | Arrow > Mailing List | Community Syncs]. > > We can save Java 11 deprecation for a future discussion. For users on Java > 11, I do anticipate this discussion to come shortly after Java 8 > deprecation is released. > > On Fri, May 17, 2024 at 10:02 AM Fokko Driesprong <fo...@apache.org> > wrote: > > > I was traveling the last few weeks, so just a follow-up from my end. > > > > Fokko, can you elaborate on the discussions held in other OSS projects to > >> drop Java <17? How did they weigh the benefits/drawbacks for dropping > both > >> Java 8 and 11 LTS versions? I'd also be curious if other projects plan > to > >> support older branches with security patches. > > > > > > So, the ones that I'm involved with (including a TLDR): > > > > - Avro: > > - (April 2024: Consensus on moving to 11+, +1 for moving to 17+) > > https://lists.apache.org/thread/6vbd3w5qk7mpb5lyrfyf2s0z1cymjt5w > > - (Jan 2024: Consensus on dropping 8) > > https://lists.apache.org/thread/bd39zhk655pgzfctq763vp3z4xrjpx58 > > - Iceberg: > > - (Jan 2023: Concerns about Hive): > > https://lists.apache.org/thread/hr7rdxvddw3fklfyg3dfbqbsy81hzhyk > > - (Feb 2024: Concensus to drop Hadoop 2.x, and move to JDK11+, > > also +1's for moving to 17+): > > https://lists.apache.org/thread/ntrk2thvsg9tdccwd4flsdz9gg743368 > > > > I think the most noteworthy (slow-moving in general): > > > > - Spark 4 supports JDK 17+ > > - Hive 4 is still on Java 8 > > <https://github.com/apache/hive?tab=readme-ov-file#java> > > > > It looks like most of the projects are looking at each other. Keep in > > mind, that projects that still support older versions of Java, can still > > use older versions of Arrow. > > > > [image: spiderman-pointing-at-spiderman.jpeg] > > (in case the image doesn't come through, that's Spiderman pointing at > > Spiderman) > > > > Concerning the Java 11 support, some data: > > > > - Oracle 11: support until January 2032 (extended fee has been waived) > > - Cornetto 11: September 2027 > > - Adoptium 11: At least Oct 2027 > > - Zulu 11: Jan 2032 > > - OpenJDK11: October 2024 > > > > I think it is fair to support 11 for the time being, but at some point, > we > > also have to move on and start exploiting the new features and make sure > > that we keep up to date. For example, Java 8 also has extended support > > until 2030. Dependabot on the Iceberg project > > < > https://github.com/apache/iceberg/pulls?q=is%3Aopen+is%3Apr+label%3Adependencies > > > > nicely shows which projects are already at JDK11+ :) > > > > Thanks Dane for driving this! > > > > Kind regards, > > Fokko > > > > > > > > > > > > Op vr 17 mei 2024 om 07:44 schreef Jean-Baptiste Onofré <j...@nanthrax.net > >: > > > >> Hi Dane > >> > >> Do we have a formal consensus about Java version in regards of arrow > >> version ? > >> I agree with the plan but just wondering if it’s ok from everyone with > the > >> community. > >> > >> Regards > >> JB > >> > >> Le jeu. 16 mai 2024 à 18:05, Dane Pitkin <dpit...@apache.org> a écrit : > >> > >> > To wrap up this thread on Java 8 deprecation, here is my current plan > of > >> > action: > >> > > >> > 1) Arrow v17 will be the last version supporting Java 8 and the > release > >> > notes will warn of its impending deprecation. > >> > 2) Arrow v18 will be the first release supporting min version Java 11. > >> > > >> > I have updated the GH issue[1] to reflect this. > >> > > >> > [1]https://github.com/apache/arrow/issues/38051 > >> > > >> > On Wed, May 8, 2024 at 5:46 PM Dane Pitkin > <d...@voltrondata.com.invalid > >> > > >> > wrote: > >> > > >> > > Thank you all for your valuable input. The consensus from my > >> > understanding > >> > > is that dropping Java 8 is not contentious, so we will move forward > >> here. > >> > > > >> > > We won't drop Java 11 yet, but there's a chance it will happen > sooner > >> > than > >> > > later. I brought up Java 8 & 11 deprecation in the community sync > >> again > >> > > today. The summary is that the ASF could be enforcing stricter > >> security > >> > > practices in the near future. Arrow Java may be forced to drop Java > >> 11 if > >> > > any of its dependencies no longer support Java 11. This is something > >> > we'll > >> > > have to investigate and monitor. When the time is right, we should > >> start > >> > a > >> > > new thread on the mailing list to discuss. > >> > > > >> > > Thanks, > >> > > Dane > >> > > > >> > > On Sat, May 4, 2024 at 2:51 AM <martin.trave...@icloud.com.invalid> > >> > wrote: > >> > > > >> > > > Hi, > >> > > > > >> > > > We were originally expecting to keep Java 11 to the 2026 EOL date > >> for > >> > > > extended support, but now that date is moved to 2032 which feels > >> like > >> > > more > >> > > > time than we need. The issue for us is that getting technology > >> approved > >> > > for > >> > > > use in an enterprise can have ridiculously long lead times, so > >> having a > >> > > > minimum supported version that is only 2 years old, while probably > >> ok > >> > in > >> > > > most case, would be a bit aggressive. We use optional dependencies > >> > where > >> > > we > >> > > > can, so e.g. the Java 17 dependency for Spark 4 would only affect > >> > clients > >> > > > using Spark 4, and they could wait to upgrade. But we chose to use > >> > Arrow > >> > > in > >> > > > the core of our product, it is the internal format everything else > >> goes > >> > > > through. On the compliance side we have to keep current with > >> security > >> > > > updates, so there is no option to stick on an old version. > >> > > > > >> > > > If we were to drop Java 11 after the next LTS comes out, i.e. > 2025 / > >> > > 2026, > >> > > > then the three latest LTS versions would be supported and the > >> minimum > >> > > > version would have been available for 4 - 5 years. I think it > would > >> be > >> > > very > >> > > > hard to argue 17 can’t be made available at that point. If Arrow > >> forces > >> > > our > >> > > > hand then obviously we’ll have to go sooner, but it wouldn’t be > >> ideal > >> > for > >> > > > us. > >> > > > > >> > > > Lastly just on language capabilities, the only things we’re really > >> > > > interested in are performance related, probably virtual threads > and > >> > > foreign > >> > > > memory would be the main ones. Both of the those could be optional > >> > > > dependencies, in the case of FFM we’d rely on either yourselves or > >> > Netty > >> > > > anyway to provide an allocator. So in fact there is very little > >> benefit > >> > > for > >> > > > us to drop Java 11 early, all it costs us is one extra CI job. > >> > > > > >> > > > Hope some of this is helpful - apologies for the high latency, > busy > >> as > >> > > > always!! > >> > > > > >> > > > Martin. > >> > > > > >> > > > > >> > > > > On 1 May 2024, at 22:38, Dane Pitkin > <d...@voltrondata.com.INVALID > >> > > >> > > > wrote: > >> > > > > > >> > > > > Thanks, Martin. It's great to hear of real-world use cases. Do > you > >> > > > > anticipate any timeline for dropping Java 11 for your product? > If > >> > Arrow > >> > > > did > >> > > > > drop Java 11, then it sounds like pinning Arrow Java to an older > >> > > version > >> > > > > wouldn't be an ideal option if security patches are not > >> backported. > >> > > > > > >> > > > > Fokko, can you elaborate on the discussions held in other OSS > >> > projects > >> > > to > >> > > > > drop Java <17? How did they weigh the benefits/drawbacks for > >> dropping > >> > > > both > >> > > > > Java 8 and 11 LTS versions? I'd also be curious if other > projects > >> > plan > >> > > to > >> > > > > support older branches with security patches. > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > On Tue, Apr 30, 2024 at 4:14 PM <martin.trave...@icloud.com > >> .invalid> > >> > > > wrote: > >> > > > > > >> > > > >> Speaking for my own product we would like to see Java 11 > >> support, we > >> > > > rely > >> > > > >> heavily on Arrow and have Java 11 as our minimum supported > >> version. > >> > > We’d > >> > > > >> like to keep doing that if possible. Our clients are big > >> enterprises > >> > > > with > >> > > > >> notoriously sluggish update cycles, so we want to offer maximum > >> > > > >> compatibility. Once security patches are no longer available on > >> the > >> > > > regular > >> > > > >> public channels then there is a compliance issue, so we > generally > >> > > follow > >> > > > >> the EOL schedule of our dependencies. > >> > > > >> > >> > > > >> Corretto, Adoptium and Zulu all have recent public builds of > >> both 8 > >> > > and > >> > > > 11 > >> > > > >> and look set to support them with public builds for many years > to > >> > > come. > >> > > > >> Several organisations I have worked with switched away from > >> Oracle > >> > > when > >> > > > >> they made their licensing blunder with Java 8 and although that > >> is > >> > > > >> rectified now, the change seems to have stuck in quite a few > >> places > >> > > (at > >> > > > >> least in my anecdotal experience). > >> > > > >> > >> > > > >> A major practical difference to me in Java 17 is the strong > >> > > > encapsulation > >> > > > >> of internals. Since that affects the majority of serious Java > >> > > > applications > >> > > > >> then perhaps most people have figured out by now to add the JVM > >> > params > >> > > > that > >> > > > >> let Java continue working. Still, it could be a consideration, > if > >> > > > Java17 > >> > > > >> is the baseline supported version. > >> > > > >> > >> > > > >> Regards, > >> > > > >> Martin. > >> > > > >> > >> > > > >> - In case anyone is curious why we don’t support Java 8 per our > >> own > >> > > > >> policy, it’s because of the “var” keyword - seriously, why did > >> Java > >> > > > take so > >> > > > >> long with that, even C++ got there sooner! > >> > > > >> > >> > > > >>> On 30 Apr 2024, at 16:20, Jacob Wujciak < > assignu...@apache.org> > >> > > wrote: > >> > > > >>> > >> > > > >>> Hello everyone! > >> > > > >>> Great to see this move forward! > >> > > > >>> +1 on dropping both 8 and 11 unless there is very good reason > to > >> > keep > >> > > > 11 > >> > > > >>> around. > >> > > > >>> Otherwise people will just move to 11 and then have the pain > of > >> > > > migration > >> > > > >>> again when we drop that (which will happen soon regardless > imo). > >> > > > >>> > >> > > > >>> Am Di., 30. Apr. 2024 um 16:18 Uhr schrieb Dane Pitkin > >> > > > >>> <d...@voltrondata.com.invalid>: > >> > > > >>> > >> > > > >>>> Thanks, JB. Are we aware of any downstream dependencies that > >> would > >> > > > >> benefit > >> > > > >>>> from maintaining Java 11 support? Apache Spark jumped > straight > >> to > >> > > Java > >> > > > >> 17. > >> > > > >>>> It seems other projects are dropping both 8 and 11 at the > same > >> > time > >> > > as > >> > > > >>>> mentioned by Fokko. From a maintenance perspective, it would > be > >> > nice > >> > > > to > >> > > > >>>> drop both. > >> > > > >>>> > >> > > > >>>> On Mon, Apr 29, 2024 at 11:20 AM Jean-Baptiste Onofré < > >> > > > j...@nanthrax.net> > >> > > > >>>> wrote: > >> > > > >>>> > >> > > > >>>>> Hi > >> > > > >>>>> > >> > > > >>>>> I think it's time to drop JDK8 support. I would say that we > >> > should > >> > > > >>>>> keep Java11 (jumping directly to Java17 would be problematic > >> > > > >>>>> potentially for some users I guess). > >> > > > >>>>> > >> > > > >>>>> Regards > >> > > > >>>>> JB > >> > > > >>>>> > >> > > > >>>>> On Thu, Apr 25, 2024 at 10:21 PM James Duong > >> > > > >>>>> <james.du...@improving.com.invalid> wrote: > >> > > > >>>>>> > >> > > > >>>>>> If we dropped JDK 8, we could use the JDK to compile > >> > > > module-info.java > >> > > > >>>>> files. Then we could remove the custom maven plugin we’re > >> using > >> > for > >> > > > >>>>> compiling module-info.java files for JPMS support and get > >> better > >> > > IDE > >> > > > >>>>> integration (as what we’re doing currently somewhat > shoe-horns > >> > > module > >> > > > >>>>> information alongside JDK8 bytecode). > >> > > > >>>>>> > >> > > > >>>>>> From: Dane Pitkin <d...@voltrondata.com.INVALID> > >> > > > >>>>>> Date: Thursday, April 25, 2024 at 1:02 PM > >> > > > >>>>>> To: dev@arrow.apache.org <dev@arrow.apache.org> > >> > > > >>>>>> Subject: [DISCUSS] Drop Java 8 support > >> > > > >>>>>> Hi all, > >> > > > >>>>>> > >> > > > >>>>>> I would like to revisit the discussion of dropping Java 8 > >> (and > >> > > maybe > >> > > > >>>> 11) > >> > > > >>>>>> from Arrow's Java implementation. See GH issue[1] below. > This > >> > was > >> > > > also > >> > > > >>>>>> discussed in the last Arrow community sync meeting on > >> > 2024-04-24. > >> > > > >>>>>> > >> > > > >>>>>> For context, this was discussed[2] last year on this > mailing > >> > list. > >> > > > We > >> > > > >>>>>> decided to revisit the discussion around the June 2024 > >> release > >> > > > (Arrow > >> > > > >>>>> v17). > >> > > > >>>>>> The timing coincides with the initial release of Apache > Spark > >> > > 4.0.0, > >> > > > >>>>> which > >> > > > >>>>>> drops both Java 8 and 11 support. > >> > > > >>>>>> > >> > > > >>>>>> For background, we chose not to drop Java 8 support last > year > >> > > > because > >> > > > >>>>> Arrow > >> > > > >>>>>> is seen as a low level library that should support as many > >> > > > >> environments > >> > > > >>>>> as > >> > > > >>>>>> possible. Nowadays, we see more enthusiasm for dropping > Java > >> 8 > >> > > (and > >> > > > >> 11) > >> > > > >>>>> as > >> > > > >>>>>> exemplified by Apache Spark as well as Apache Iceberg[3]. > >> > > > >>>>>> > >> > > > >>>>>> Is it time to consider dropping Java 8? Should we drop Java > >> 11 > >> > and > >> > > > >> skip > >> > > > >>>>>> straight to Java 17 as our minimum version? What > >> implications do > >> > > we > >> > > > >>>> need > >> > > > >>>>> to > >> > > > >>>>>> be aware of? > >> > > > >>>>>> > >> > > > >>>>>> Thanks, > >> > > > >>>>>> Dane > >> > > > >>>>>> > >> > > > >>>>>> [1]https://github.com/apache/arrow/issues/38051 > >> > > > >>>>>> [2] > >> > > https://lists.apache.org/thread/s07jx58yw4mkl54t3bkggnyg0sftcrr8 > >> > > > >>>>>> [3] > >> > > https://lists.apache.org/thread/ntrk2thvsg9tdccwd4flsdz9gg743368 > >> > > > >>>>> > >> > > > >>>> > >> > > > >> > >> > > > >> > >> > > > > >> > > > > >> > > > >> > > >> > > >
