Yeah, I do like the idea of using --release. We'll need to test it with
those platforms though.

On Tue, Apr 25, 2023 at 12:04 PM Anton Okolnychyi
<aokolnyc...@apple.com.invalid> wrote:

> It would be interesting to hear more from Hive/Impala folks on this topic.
>
> I’d avoid supporting both JDK8 and JDK11 given the complexity we need to
> add. Our build is already complicated.
>
> Jack’s idea of using JDK11 with --release flag may be worth exploring.
>
> - Anton
>
> On Apr 24, 2023, at 10:11 AM, Jack Ye <yezhao...@gmail.com> wrote:
>
> I agree, it wouldn't help given the fact that we won't be able to use the
> features in newer JDKs.
>
> However, I think there is still a difference in the artifact compiled by
> JDK8, vs compiled by JDK11 with --release=8, that might be useful. For
> example, I came across this try with resource introduces unreachable byte
> code issue
> <https://stackoverflow.com/questions/25615417/try-with-resources-introduce-unreachable-bytecode/25746587#25746587>
> which is fixed in JDK11, and some optimizations in JDK9 related to string
> concatenation <https://openjdk.org/jeps/280>. Although Javac is not an
> optimizing compiler and there should not be much difference in performance
> of the jars produced by different compilers, these changes might be worth
> for the project to declare a newer compile-time JDK across all modules, and
> just always enforce --release flag to 8 to ensure people do not use newer
> JDK features. But these are quite minor changes so I am not very
> opinionated either way.
>
> Any thoughts?
>
> -Jack
>
> On Mon, Apr 24, 2023 at 2:22 AM Zoltán Borók-Nagy <borokna...@apache.org>
> wrote:
>
>> Besides Hive, neither Impala is compatible with Java11 right now. This
>> work is in-progress: https://issues.apache.org/jira/browse/IMPALA-11360
>>
>> - Zoltan
>>
>> On Mon, Apr 24, 2023 at 11:07 AM Mass Dosage <massdos...@gmail.com>
>> wrote:
>>
>>> I agree with Ryan, unless you can change the source version there's not
>>> that much point.
>>>
>>> On the Hive front, as you can see from that ticket it's been open for
>>> 4(!) years and hasn't received much action recently. I think it's one of
>>> the reasons AWS EMR still defaults to Java 8. It would be really great if
>>> they could finally push that one over the finish line.
>>>
>>> On Sat, 22 Apr 2023 at 20:43, Ryan Blue <b...@tabular.io> wrote:
>>>
>>>> I think in order to publish multiple versions we would need to have
>>>> different artifact names, like Scala uses (e.g. _2.12).
>>>>
>>>> It probably also wouldn't help. If we have to remain compatible with
>>>> JDK 8, then publishing some artifacts for JDK 11 would still mean only
>>>> using JDK 8 features. The source version is what we care about more, so if
>>>> we can't change it then we can't really do anything else.
>>>>
>>>> On Sat, Apr 22, 2023 at 10:12 AM Jack Ye <yezhao...@gmail.com> wrote:
>>>>
>>>>> Would it be an option to use --release flag to control the release
>>>>> target version, and publish 2 versions of the library to Maven, 1 for JDK8
>>>>> and 1 for JDK11?
>>>>>
>>>>> Jack
>>>>>
>>>>> On Fri, Apr 21, 2023 at 5:17 PM Ryan Blue <b...@tabular.io> wrote:
>>>>>
>>>>>> Looks like Hive isn't quite done migrating to Java 11:
>>>>>> https://issues.apache.org/jira/browse/HIVE-22415
>>>>>>
>>>>>> I'm not sure whether that's still a problem, but we currently don't
>>>>>> build Hive 3 support unless we're using Java 8. That makes me think that
>>>>>> dropping JDK 8 support would probably also make it a lot more difficult 
>>>>>> for
>>>>>> Hive to do releases based on Iceberg. Even with some of the integration
>>>>>> moving into the Hive project, if we started shipping JDK 11 Jars then 
>>>>>> Hive
>>>>>> would no longer be able to update.
>>>>>>
>>>>>> Ryan
>>>>>>
>>>>>> On Fri, Apr 21, 2023 at 5:02 PM Anton Okolnychyi <
>>>>>> aokolnyc...@apple.com.invalid> wrote:
>>>>>>
>>>>>>> Sorry, I wasn’t clear that I also imply dropping JDK 8 (unless there
>>>>>>> is a good reason to keep it?).
>>>>>>>
>>>>>>> - Anton
>>>>>>>
>>>>>>> On Apr 21, 2023, at 4:59 PM, Ryan Blue <b...@tabular.io> wrote:
>>>>>>>
>>>>>>> Would we also drop support for JDK 8?
>>>>>>>
>>>>>>> On Fri, Apr 21, 2023 at 4:58 PM Anton Okolnychyi <
>>>>>>> aokolnyc...@apple.com.invalid> wrote:
>>>>>>>
>>>>>>>> Following up on the discussion in the Spark 2.4 thread, shall we
>>>>>>>> move to JDK 11 for releases as Spark 2.4 support has been dropped?
>>>>>>>>
>>>>>>>> - Anton
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Ryan Blue
>>>>>>> Tabular
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> --
>>>>>> Ryan Blue
>>>>>> Tabular
>>>>>>
>>>>>
>>>>
>>>> --
>>>> Ryan Blue
>>>> Tabular
>>>>
>>>
>

-- 
Ryan Blue
Tabular

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