In addition: we test for compatibility with Java 17 (both Lucene and Solr), so 
consumer is still able to use any version and has enough flexibility.

Uwe

Am 13. September 2021 18:52:53 UTC schrieb Dawid Weiss <[email protected]>:
>I agree with Uwe and Robert. JDK11, then the min bar should move if there
>is something that brings value (be it performance, LTS or some other
>attractive option).
>
>Dawid
>
>On Mon, Sep 13, 2021 at 8:15 PM Robert Muir <[email protected]> wrote:
>
>> +1, I think the main thing to watch out for is project panama. If we
>> get a 18.x/19.x release with non-incubating APIs, I think it makes
>> sense to create a new major Lucene version. Even if it isn't an
>> OpenJDK LTS release. It could really change a lot, especially
>> regarding hotspots in the code such as postings/dv compression. So it
>> would be great to allow a lot of folks to make a "take two" on these
>> algorithms with vectorization in mind. This is just my opinion.
>>
>> On Mon, Sep 13, 2021 at 2:10 PM Uwe Schindler <[email protected]> wrote:
>> >
>> > There are no good reasons to do Java 17 and it is way too early.
>> >
>> >
>> >
>> > Reagrding real optimizations, Lucene 17 is unfortunately not containing
>> Project Panama or Vector API, so it looks more like Java 18/19 is a good
>> candidate as a new minimum at a later stage.
>> >
>> >
>> >
>> > I’d release Lucene 9 with Java 11 (which is LTS) and then decide later
>> if we update to some post-17 version to get the new vector and panama APIs
>> (vector search, SIMD and also MMapDirectory v2). If we do this, we should
>> simply release Lucene 10.
>> >
>> >
>> >
>> > Uwe
>> >
>> >
>> >
>> > -----
>> >
>> > Uwe Schindler
>> >
>> > Achterdiek 19, D-28357 Bremen
>> >
>> > https://www.thetaphi.de
>> >
>> > eMail: [email protected]
>> >
>> >
>> >
>> > From: Mike Drob <[email protected]>
>> > Sent: Monday, September 13, 2021 8:00 PM
>> > To: Solr/Lucene Dev <[email protected]>
>> > Subject: Java 11/17 Version Matrix
>> >
>> >
>> >
>> > Hi Devs,
>> >
>> >
>> >
>> > What are our thoughts on Java 11 and 17 version compatibility going
>> forward for Lucene 9? Will we support both? If so, would Java 11 support
>> likely continue for the entire 9.x release line?
>> >
>> >
>> >
>> > Is there a JIRA tracking this?
>> >
>> >
>> >
>> > Thanks,
>> >
>> > Mike
>>
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--
Uwe Schindler
Achterdiek 19, 28357 Bremen
https://www.thetaphi.de

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