JDK12: java.lang.IllegalArgumentException: org.springframework.data.jpa.repository.support.CrudMethodMetadata referenced from a method is not visible from class loader

[rovarghe]

java.lang.IllegalArgumentException: org.springframework.data.jpa.repository.support.CrudMethodMetadata referenced from a method is not visible from class loader
at java.lang.reflect.Proxy$ProxyBuilder.ensureVisible(Proxy.java:883) ~[?:?]
at java.lang.reflect.Proxy$ProxyBuilder.validateProxyInterfaces(Proxy.java:721) ~[?:?]
at java.lang.reflect.Proxy$ProxyBuilder.(Proxy.java:648) ~[?:?]
at java.lang.reflect.Proxy.lambda$getProxyConstructor$1(Proxy.java:440) ~[?:?]
at jdk.internal.loader.AbstractClassLoaderValue$Memoizer.get(AbstractClassLoaderValue.java:329) ~[?:?]
at jdk.internal.loader.AbstractClassLoaderValue.computeIfAbsent(AbstractClassLoaderValue.java:205) ~[?:?]
at java.lang.reflect.Proxy.getProxyConstructor(Proxy.java:438) ~[?:?]
at java.lang.reflect.Proxy.newProxyInstance(Proxy.java:1037) ~[?:?]
at org.springframework.aop.framework.JdkDynamicAopProxy.getProxy(JdkDynamicAopProxy.java:126) ~[spring-aop-5.3.24.jar:5.3.24]
at org.springframework.aop.framework.ProxyFactory.getProxy(ProxyFactory.java:110) ~[spring-aop-5.3.24.jar:5.3.24]
at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor.getCrudMethodMetadata(CrudMethodMetadataPostProcessor.java:92) ~[spring-data-jpa-2.6.3.jar:2.6.3]
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getRepositoryFragments(JpaRepositoryFactory.java:243) ~[spring-data-jpa-2.6.3.jar:2.6.3]
at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepositoryComposition(RepositoryFactorySupport.java:435) ~[spring-data-commons-2.6.3.jar:2.6.3]
at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:300) ~[spring-data-commons-2.6.3.jar:2.6.3]
at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:251) ~[spring-data-commons-2.6.3.jar:2.6.3]

This happens when code executes

EntityManager sharedEmf = SharedEntityManagerCreator.createSharedEntityManager(emf);
RepositoryFactorySupport rfs = new JpaRepositoryFactory(sharedEmf);
rfs.getRepository(MyRepo.class);

from a thread in a Fork Join Pool

It does not happen on the main thread - or tomcat nio thread.
It does not duplicate with JDK8

[rovarghe]

Issue similar to #1179 so likely some modular class loader quirk

[gregturn]

Have you checked this against Java 17? Java 12 is a quirky version to try and work against.

[spring-projects-issues]

If you would like us to look at this issue, please provide the requested information. If the information is not provided within the next 7 days this issue will be closed.

[spring-projects-issues]

Closing due to lack of requested feedback. If you would like us to look at this issue, please provide the requested information and we will re-open the issue.