A little update: It seems the problematic thing is "JEP 396: Strongly Encapsulate JDK Internals by Default", which was introduced with Java 16. Adding "--illegal-access=permit" (default of Java 9) to the commandline arguments restored the behaviour of pre-Java 16.
Creating the minimal example as well as the related exception instead of a JVM crash helped a lot. The JVM crash in the project is gone and everything seems to work like a charm (deployment, ...). I will run some additional tests with the deployed application but it is looking good at the moment, so for now: Java 16 seem to work fine with the current 8.0.7-SNAPSHOT + OpenJPA 3.1.3-SNAPSHOT). Gruss Richard Am Donnerstag, den 08.04.2021, 11:42 +0000 schrieb Zowalla, Richard: > Sadly, I cannot reproduce the JVM crash in my minimal example. > > However, it reveals some other (probably access-related) issues in > LocalBeanProxyFactory.createProxy(...) which might have lead to the > crash in the actual project. > > It can be found here: https://github.com/rzo1/jdk16-testing > > Gruss > Richard > > > Am Donnerstag, den 08.04.2021, 11:55 +0100 schrieb Jonathan > Gallimore: > > A minimal example would be a big help, thank you! > > > > Jon > > > > On Thu, Apr 8, 2021 at 11:00 AM Zowalla, Richard < > > richard.zowa...@hs-heilbronn.de> wrote: > > > > > Hi Jon, > > > > > > thanks for your response. > > > > > > I am using the latest OpenJDK 16 build from AdoptOpenJDK ( > > > https://adoptopenjdk.net/?variant=openjdk16&jvmVariant=hotspot) > > > on > > > a > > > Ubuntu 20.04 LTS system. > > > > > > If it helps: I could try to create a minimal example to reproduce > > > the > > > crash and push it to Github. > > > > > > Gruss > > > Richard > > > > > > Am Donnerstag, den 08.04.2021, 10:39 +0100 schrieb Jonathan > > > Gallimore: > > > > I did some of the original work on LocalBeanProxyFactory way > > > > back. > > > > I'm > > > > happy to take a look. Are you building your own JDK from > > > > source, > > > > or > > > > downloading a specific binary (if so, which one)? > > > > > > > > Jon > > > > > > > > On Thu, Apr 8, 2021 at 8:07 AM Zowalla, Richard < > > > > richard.zowa...@hs-heilbronn.de> wrote: > > > > > > > > > Hi, > > > > > > > > > > I am doing some bleeding edge testing related to JDK/JRE 16 > > > > > with > > > > > the > > > > > latest TomEE 8.0.7-SNAPSHOT as we have included some 3rd > > > > > party > > > > > patches, > > > > > which should support JDK/JRE 16. One remaining thing is > > > > > OpenJPA, > > > > > which > > > > > will support J16 with 3.1.3-SNAPSHOT (so I have patched it in > > > > > my > > > > > test). > > > > > > > > > > I get this weird JVM crash [1] probably related to > > > > > LocalBeanProxyFactory when deploying a JSF/JAX-RS WAR archive > > > > > via > > > > > the > > > > > TomEE Maven Plugin. Maybe someone has some thoughts on it (or > > > > > a > > > > > hint)? > > > > > > > > > > Gruss > > > > > Richard > > > > > > > > > > > > > > > [1] > > > > > https://gist.github.com/rzo1/cf70056a0a27d4cb5a714d6211dc7563 > > > > > > > > > > > > > -- > > > Richard Zowalla, M.Sc. > > > Research Associate, PhD Student | Medical Informatics > > > > > > Hochschule Heilbronn – University of Applied Sciences > > > Max-Planck-Str. 39 > > > D-74081 Heilbronn > > > phone: +49 7131 504 6791 > > > mail: richard.zowa...@hs-heilbronn.de > > > web: https://www.mi.hs-heilbronn.de/ > > > -- Richard Zowalla, M.Sc. Research Associate, PhD Student | Medical Informatics Hochschule Heilbronn – University of Applied Sciences Max-Planck-Str. 39 D-74081 Heilbronn phone: +49 7131 504 6791 mail: richard.zowa...@hs-heilbronn.de web: https://www.mi.hs-heilbronn.de/
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