Spring Boot 2.1 exposes a property spring.data.jpa.repositories.bootstrap-mode that can be set to default (default) deferred or lazy. I suggest do change the default value for property to be changed in the following scenarios:

  • Change the general default to deferred – it parallelizes the bootstrap of the EntityManagerFactory and delays repository initialization to the end of the ApplicationContext initialization. I.e. there are performance benefits to the startup but the app is the same state as with the current default once it has been started.
  • Default to lazy for @SpringBootTest, @DataJpaTest – this leaves all but repositories injected into the tests initialized which gives a bit of a performance boost in both scenarios.

Comment From: jnizet

I wonder if going lazy for SpringBootTest and DataJpaTest is a good idea.

When creating a brand new project using initializr, a single test is typically created: contextLoads.

This test, as far as I understand, is meant to check that the context loads correctly, and thus that the application won't throw any exception once executed.

I understand that this is of course only one test, and that many others should be created, but still: with JPA repositories loaded lazily, this test will pass even though, for example, one of the JPA queries is invalid.

And, if DataJpaTest also uses lazy, if just one of the repositories happens not to be tested and is never injected anywhere, then an invalid JPA query in this repository will go unnoticed in tests.

Being faster is nice, but when it comes to tests, I'd rather have tests that are a tiny bit slower but that detect bugs.

What do you think?

Comment From: wilkinsona

I'm not in favour of any default that increases the risk of deploying something that's broken. Fast startup is all well and good, but I don't think it should be done at the expense of correctness. Other frameworks have made a different choice, and that may turn out to work well for their users, but I think it would be a mistake for us to follow suit purely to speed up startup time or test execution time.

Rather than making @SpringBootTest or @DataJpaTest lazy by default, I'd prefer to add some of the discussion in this blog post to our reference documentation, along with some examples showing how lazy initialization can be enabled in tests (@SpringBootTest(properties="spring.main.lazy-initialization=true") should be all it takes). We could also consider an attribute on the @…Test annotations to make it even easier to opt in.

Comment From: ankurbhakta

What are your thoughts of adding this optimizations as defaults in just spring boot devtools to improve the development experience?

Comment From: odrotbohm

Thanks for the feedback everyone. Very good points included. I guess I've been focussing too much on the how, whereas my actual concern was to make it very easy to make use of these configuration options.

I totally agree that we by no means should change the defaults in a way that currently working scenarios (like the general application bootstrap test that @jnizet described) should start to behave different in a less constraining way.

The proposal for making deferred the default still stands as the end result of the initialization is still equivalent to the current default, it just allows the asynchronous EntityManagerFactory initialization to take most effect possible.

Regarding the lazy initialization, I agree that making it the default for DevTools is a good idea. For the test cases, my primary goal was to avoid spending time on initializing beans that are not required by a particular test. For @Data…Test, there shouldn't be a need to initialize any repositories that are not injected into the test class. The ones injected will be fully initialized on first interaction. This should make practically no difference to the user experience as potential misconfigurations are still detected. Slightly later, but still. In fact, making other repositories lazy by default would result in those tests not fail due to bootstrap errors of unrelated repositories and thus provide a more precise picture of what's wrong exactly.

As far as I can see this is currently needed to lazify repositories for such tests:

@DataJpaTests
@TestPropertySource(properties = "spring.data.jpa.repositories.bootstrap-mode=lazy")
class MyTests { … }

I wonder if this could be shortcutted to an attribute on the @Data…Test annotations and default to lazy with the option for users to opt out of this again.

Comment From: wilkinsona

We're going to:

  • Switch the default to deferred for normal running and @SpringBootTest
  • Switch to lazy for @Data…Test
  • Add an attribute to @Data…Test that uses the BootstrapMode annotation to change the default

Comment From: scottfrederick

  • Switch to lazy for @Data…Test
  • Add an attribute to @Data…Test that uses the BootstrapMode annotation to change the default

I'm not sure what the ... should mean in the @Data...Test annotations mentioned above, but JPA repositories are the only type of repositories that have a bootstrapMode attribute on their respective @Enable...Repositories annotation in Spring Data, and the only type with a bootstrap-mode property for Spring Boot auto-configuration.

In addition, it is not currently possible to have more than one Spring Data repository configured with BootstrapMode.DEFERRED (see https://jira.spring.io/browse/DATAJPA-1672). Changing the default to DEFERRED for all types of repositories would have the potential to break any application that included more than one Spring Data Repository of any type.

For these two reasons, we should change the default to DEFERRED only for JpaRepositories and LAZY only for @DataJpaTest, leaving the default as DEFAULT for all other types of Repositories.

Comment From: odrotbohm

You're right, Scott. Deferring is currently only relevant for JPA as it's the only store for which the bootstrap of the actual persistence mechanism is taking quite a bit of time and is thus parallelized. In fact, we talk about @DataJpaTest only.

Can you elaborate why you think JpaRepository plays into this decision. I am assuming you're referring to the interface being used as base interface for user repositories. We should avoid checking for that as its usage is actually not recommended. If @DataJpaTest is used, I think it's safe to simply tweak the default for the property, as it's clear JPA is to be bootstrapped.

Comment From: scottfrederick

Can you elaborate why you think JpaRepository plays into this decision.

Apologies for the imprecise language. I was referring to the JpaRepository auto-configuration in Boot, which defines a default BootstrapMode (currently DEFAULT for all types of Repositories) and allows overriding only for JPA via the property. The JPA property override code makes it pretty easy to use a default for JPA auto-configuration that's different from the default for other Repositories.

Comment From: odrotbohm

Thanks everyone. Happy to see this change applied! 👍

Comment From: bukajsytlos

Hi there. Please is this somewhere documented? We have migrated to spring boot 2.3.0 and our app got in deadlock because of deferred being default. Thanks

Comment From: wilkinsona

The deadlock is due to a suspected bug in Spring Framework. The change to the default is mentioned in the release notes. This was added in the last couple of days so it may not have been there if you went looking for it earlier.

Comment From: zehnm

This change just cost me several hours of troubleshooting after upgrading our batches to Spring Boot 2.3.0! I'm using modularized application contexts with @EnableBatchProcessing(modular = true) and manually registering jobs with AutomaticJobRegistrar. The issue is within org.springframework.beans.factory.support.DefaultListableBeanFactory.copyConfigurationFrom which tries to instantiate org.springframework.data.repository.config.RepositoryConfigurationDelegate$LazyRepositoryInjectionPointResolver with a default constructor that doesn't exist:

Caused by: java.lang.NoSuchMethodException: org.springframework.data.repository.config.RepositoryConfigurationDelegate$LazyRepositoryInjectionPointResolver.<init>()
    at java.lang.Class.getConstructor0(Class.java:3349) ~[?:?]
    at java.lang.Class.getDeclaredConstructor(Class.java:2553) ~[?:?]
    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:139) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.copyConfigurationFrom(DefaultListableBeanFactory.java:332) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.batch.core.configuration.support.AbstractApplicationContextFactory.prepareBeanFactory(AbstractApplicationContextFactory.java:246) ~[spring-batch-core-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.batch.core.configuration.support.GenericApplicationContextFactory$ApplicationContextHelper.prepareBeanFactory(GenericApplicationContextFactory.java:121) ~[spring-batch-core-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.batch.core.configuration.support.GenericApplicationContextFactory$ResourceAnnotationApplicationContext.prepareBeanFactory(GenericApplicationContextFactory.java:229) ~[spring-batch-core-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:525) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
    at org.springframework.batch.core.configuration.support.GenericApplicationContextFactory$ResourceAnnotationApplicationContext.<init>(GenericApplicationContextFactory.java:223) ~[spring-batch-core-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.batch.core.configuration.support.GenericApplicationContextFactory.createApplicationContext(GenericApplicationContextFactory.java:68) ~[spring-batch-core-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.batch.core.configuration.support.AbstractApplicationContextFactory.createApplicationContext(AbstractApplicationContextFactory.java:174) ~[spring-batch-core-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.batch.core.configuration.support.DefaultJobLoader.doLoad(DefaultJobLoader.java:160) ~[spring-batch-core-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.batch.core.configuration.support.DefaultJobLoader.load(DefaultJobLoader.java:153) ~[spring-batch-core-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.batch.core.configuration.support.AutomaticJobRegistrar.start(AutomaticJobRegistrar.java:157) ~[spring-batch-core-4.2.2.RELEASE.jar:4.2.2.RELEASE]

It works with setting: spring.data.jpa.repositories.bootstrap-mode=default I hope this helps anyone going through the same troubles. Should this be reported as a bug in spring-data?

Comment From: wilkinsona

@zehnm Sorry for the time it took to track down the problem and thank you for sharing what you learned. This probably needs to be addressed in both Spring Framework (as the need for a default constructor does not appear to be documented) and in Spring Data (to provide a default constructor). I'll bring it to the Data team's attention.

Comment From: ctmay4

I must have missed the change to the default, but this change affected both the projects I updated. Both intermittently would hang on start up and also when running tests. Changing the bootstrap mode back to default seems to have fixed it (so far so good). I'm not using org.hibernate.search.FieldBridge so I'm not sure my issue is the same as https://github.com/spring-projects/spring-framework/issues/25111, but it was definitely a deadlock.

Comment From: wilkinsona

@ctmay4 if you have the time, it would be great if you could capture and share a thread dump when things are deadlocked.

Comment From: odrotbohm

I've filed an issue for Spring Framework and @jhoeller seemed positive to be able to avoid a fix for the needed default constructor with the framework itself.

Comment From: ctmay4

Here is the thread dump when startup is hanging.

"main@1" prio=5 tid=0x1 nid=NA waiting
  java.lang.Thread.State: WAITING
     blocks task-1@7519
      at jdk.internal.misc.Unsafe.park(Unsafe.java:-1)
      at java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
      at java.util.concurrent.FutureTask.awaitDone(FutureTask.java:447)
      at java.util.concurrent.FutureTask.get(FutureTask.java:190)
      at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.getNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:540)
      at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.invokeProxyMethod(AbstractEntityManagerFactoryBean.java:497)
      at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$ManagedEntityManagerFactoryInvocationHandler.invoke(AbstractEntityManagerFactoryBean.java:680)
      at com.sun.proxy.$Proxy93.getMetamodel(Unknown Source:-1)
      at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean$$Lambda$859.436399072.apply(Unknown Source:-1)
      at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
      at java.util.Iterator.forEachRemaining(Iterator.java:133)
      at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
      at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
      at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
      at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)
      at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
      at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)
      at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.getMetamodels(JpaMetamodelMappingContextFactoryBean.java:106)
      at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:80)
      at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:44)
      at org.springframework.beans.factory.config.AbstractFactoryBean.afterPropertiesSet(AbstractFactoryBean.java:142)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1855)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1792)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
      at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
      at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$318.1466413743.getObject(Unknown Source:-1)
      at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)
      - locked <0x273d> (a java.util.concurrent.ConcurrentHashMap)
      at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
      at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:330)
      at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:113)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1699)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1444)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
      at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
      at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$318.1466413743.getObject(Unknown Source:-1)
      at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)
      at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:207)
      at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1114)
      at org.springframework.data.repository.support.Repositories.cacheRepositoryFactory(Repositories.java:99)
      - locked <0x273e> (a org.springframework.data.repository.support.Repositories)
      at org.springframework.data.repository.support.Repositories.populateRepositoryFactoryInformation(Repositories.java:92)
      at org.springframework.data.repository.support.Repositories.<init>(Repositories.java:85)
      at org.springframework.data.repository.support.DomainClassConverter.setApplicationContext(DomainClassConverter.java:109)
      at org.springframework.data.web.config.SpringDataWebConfiguration.addFormatters(SpringDataWebConfiguration.java:130)
      at org.springframework.web.servlet.config.annotation.WebMvcConfigurerComposite.addFormatters(WebMvcConfigurerComposite.java:81)
      at org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration.addFormatters(DelegatingWebMvcConfiguration.java:78)
      at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration.mvcConversionService(WebMvcAutoConfiguration.java:435)
      at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-1)
      at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:566)
      at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
      at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:651)
      at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:636)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1338)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
      at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
      at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$318.1466413743.getObject(Unknown Source:-1)
      at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)
      at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
      at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1306)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1226)
      at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:885)
      at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:789)
      at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:539)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1338)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
      at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
      at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$318.1466413743.getObject(Unknown Source:-1)
      at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)
      at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:895)
      at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878)
      at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)
      - locked <0x273f> (a java.lang.Object)
      at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143)
      at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
      at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
      at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237)
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
      at com.imsweb.seerdms.admin.AdminApplication.main(AdminApplication.java:34)

"task-1@7519" prio=5 tid=0x181 nid=NA waiting for monitor entry
  java.lang.Thread.State: BLOCKED
     waiting for main@1 to release lock on <0x273d> (a java.util.concurrent.ConcurrentHashMap)
      at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:183)
      at org.springframework.beans.factory.support.AbstractBeanFactory.isTypeMatch(AbstractBeanFactory.java:517)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:533)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:505)
      at org.springframework.beans.factory.BeanFactoryUtils.beanNamesForTypeIncludingAncestors(BeanFactoryUtils.java:265)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1472)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1269)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1226)
      at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:885)
      at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:789)
      at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:228)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1358)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1204)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:353)
      at org.springframework.orm.hibernate5.SpringBeanContainer.createBean(SpringBeanContainer.java:147)
      at org.springframework.orm.hibernate5.SpringBeanContainer.getBean(SpringBeanContainer.java:105)
      at org.hibernate.resource.beans.internal.ManagedBeanRegistryImpl.getBean(ManagedBeanRegistryImpl.java:61)
      at org.hibernate.boot.model.convert.internal.ClassBasedConverterDescriptor.createManagedBean(ClassBasedConverterDescriptor.java:38)
      at org.hibernate.boot.model.convert.internal.AbstractConverterDescriptor.createJpaAttributeConverter(AbstractConverterDescriptor.java:107)
      at org.hibernate.mapping.SimpleValue.buildAttributeConverterTypeAdapter(SimpleValue.java:570)
      at org.hibernate.mapping.SimpleValue.setTypeUsingReflection(SimpleValue.java:531)
      at org.hibernate.cfg.annotations.SimpleValueBinder.fillSimpleValue(SimpleValueBinder.java:511)
      at org.hibernate.cfg.SetSimpleValueTypeSecondPass.doSecondPass(SetSimpleValueTypeSecondPass.java:25)
      at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses(InFlightMetadataCollectorImpl.java:1693)
      at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses(InFlightMetadataCollectorImpl.java:1651)
      at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:286)
      at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1214)
      at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1245)
      at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58)
      at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365)
      at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:391)
      at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$$Lambda$769.882838692.call(Unknown Source:-1)
      at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:264)
      at java.util.concurrent.FutureTask.run(FutureTask.java:-1)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
      at java.lang.Thread.run(Thread.java:834)

"Catalina-utility-1@7279" prio=1 tid=0x17e nid=NA waiting
  java.lang.Thread.State: WAITING
      at jdk.internal.misc.Unsafe.park(Unsafe.java:-1)
      at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
      at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2123)
      at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182)
      at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
      at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
      at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
      at java.lang.Thread.run(Thread.java:834)

"Catalina-utility-2@7283" prio=1 tid=0x17f nid=NA waiting
  java.lang.Thread.State: WAITING
      at jdk.internal.misc.Unsafe.park(Unsafe.java:-1)
      at java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
      at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2081)
      at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1177)
      at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
      at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
      at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
      at java.lang.Thread.run(Thread.java:834)

"RMI Scheduler(0)@3836" daemon prio=5 tid=0x13 nid=NA waiting
  java.lang.Thread.State: WAITING
      at jdk.internal.misc.Unsafe.park(Unsafe.java:-1)
      at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
      at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2123)
      at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182)
      at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
      at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
      at java.lang.Thread.run(Thread.java:834)

"HikariPool-1 housekeeper@8907" daemon prio=5 tid=0x184 nid=NA waiting
  java.lang.Thread.State: WAITING
      at jdk.internal.misc.Unsafe.park(Unsafe.java:-1)
      at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
      at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2123)
      at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182)
      at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
      at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
      at java.lang.Thread.run(Thread.java:834)

"Common-Cleaner@1773" daemon prio=8 tid=0xa nid=NA waiting
  java.lang.Thread.State: WAITING
      at java.lang.Object.wait(Object.java:-1)
      at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:155)
      at jdk.internal.ref.CleanerImpl.run(CleanerImpl.java:148)
      at java.lang.Thread.run(Thread.java:834)
      at jdk.internal.misc.InnocuousThread.run(InnocuousThread.java:134)

"RMI TCP Accept-0@1714" daemon prio=5 tid=0x10 nid=NA runnable
  java.lang.Thread.State: RUNNABLE
      at java.net.PlainSocketImpl.accept0(PlainSocketImpl.java:-1)
      at java.net.PlainSocketImpl.socketAccept(PlainSocketImpl.java:159)
      at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:458)
      at java.net.ServerSocket.implAccept(ServerSocket.java:565)
      at java.net.ServerSocket.accept(ServerSocket.java:533)
      at sun.management.jmxremote.LocalRMIServerSocketFactory$1.accept(LocalRMIServerSocketFactory.java:52)
      at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(TCPTransport.java:394)
      at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(TCPTransport.java:366)
      at java.lang.Thread.run(Thread.java:834)

"RMI TCP Connection(1)-172.22.34.23@3482" daemon prio=5 tid=0x12 nid=NA runnable
  java.lang.Thread.State: RUNNABLE
      at java.net.SocketInputStream.socketRead0(SocketInputStream.java:-1)
      at java.net.SocketInputStream.socketRead(SocketInputStream.java:115)
      at java.net.SocketInputStream.read(SocketInputStream.java:168)
      at java.net.SocketInputStream.read(SocketInputStream.java:140)
      at java.io.BufferedInputStream.fill(BufferedInputStream.java:252)
      at java.io.BufferedInputStream.read(BufferedInputStream.java:271)
      - locked <0x2742> (a java.io.BufferedInputStream)
      at java.io.FilterInputStream.read(FilterInputStream.java:83)
      at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:544)
      at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:796)
      at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:677)
      at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$$Lambda$222.498706880.run(Unknown Source:-1)
      at java.security.AccessController.doPrivileged(AccessController.java:-1)
      at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:676)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
      at java.lang.Thread.run(Thread.java:834)

"container-0@7293" prio=5 tid=0x180 nid=NA sleeping
  java.lang.Thread.State: TIMED_WAITING
      at java.lang.Thread.sleep(Thread.java:-1)
      at org.apache.catalina.core.StandardServer.await(StandardServer.java:570)
      at org.springframework.boot.web.embedded.tomcat.TomcatWebServer$1.run(TomcatWebServer.java:197)

"Reference Handler@10043" daemon prio=10 tid=0x2 nid=NA runnable
  java.lang.Thread.State: RUNNABLE
      at java.lang.ref.Reference.waitForReferencePendingList(Reference.java:-1)
      at java.lang.ref.Reference.processPendingReferences(Reference.java:241)
      at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:213)

"Finalizer@9857" daemon prio=8 tid=0x3 nid=NA waiting
  java.lang.Thread.State: WAITING
      at java.lang.Object.wait(Object.java:-1)
      at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:155)
      at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:176)
      at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:170)

"Signal Dispatcher@10044" daemon prio=9 tid=0x4 nid=NA runnable
  java.lang.Thread.State: RUNNABLE

"Attach Listener@3193" daemon prio=5 tid=0x5 nid=NA runnable
  java.lang.Thread.State: RUNNABLE

Comment From: odrotbohm

Thanks, @ctmay4, that's very helpful. It looks like issue is caused by the Spring Data web integration being triggered and that trying to look up repositories during initialization and thus ending up waiting to be able to use the JPA meta-model currently in creation.

I think DomainClassConverter is a decent place to delay that initialization until the first use of the converter.

Comment From: bukajsytlos

In our case, we are using repositories during application startup

Thread dump at 0:08.725.872

* Thread group "main":

  Thread "main":
    at jdk.internal.misc.Unsafe.park(boolean, long)
    at java.util.concurrent.locks.LockSupport.park(java.lang.Object) (line: 194)
    at java.util.concurrent.FutureTask.awaitDone(boolean, long) (line: 447)
    at java.util.concurrent.FutureTask.get() (line: 190)
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.getNativeEntityManagerFactory() (line: 540)
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.invokeProxyMethod(java.lang.reflect.Method, java.lang.Object[ ]) (line: 497)
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$ManagedEntityManagerFactoryInvocationHandler.invoke(java.lang.Object, java.lang.reflect.Method, java.lang.Object[ ]) (line: 680)
    at com.sun.proxy.$Proxy135.getMetamodel()
    at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean$$Lambda$824.1357311524.apply(java.lang.Object)
    at java.util.stream.ReferencePipeline$3$1.accept(java.lang.Object) (line: 195)
    at java.util.Iterator.forEachRemaining(java.util.function.Consumer) (line: 133)
    at java.util.Spliterators$IteratorSpliterator.forEachRemaining(java.util.function.Consumer) (line: 1801)
    at java.util.stream.AbstractPipeline.copyInto(java.util.stream.Sink, java.util.Spliterator) (line: 484)
    at java.util.stream.AbstractPipeline.wrapAndCopyInto(java.util.stream.Sink, java.util.Spliterator) (line: 474)
    at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(java.util.stream.PipelineHelper, java.util.Spliterator) (line: 913)
    at java.util.stream.AbstractPipeline.evaluate(java.util.stream.TerminalOp) (line: 234)
    at java.util.stream.ReferencePipeline.collect(java.util.stream.Collector) (line: 578)
    at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.getMetamodels() (line: 106)
    at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance() (line: 80)
    at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance() (line: 44)
    at org.springframework.beans.factory.config.AbstractFactoryBean.afterPropertiesSet() (line: 142)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(java.lang.String, java.lang.Object, org.springframework.beans.factory.support.RootBeanDefinition) (line: 1855)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(java.lang.String, java.lang.Object, org.springframework.beans.factory.support.RootBeanDefinition) (line: 1792)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, java.lang.Object[ ]) (line: 595)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, java.lang.Object[ ]) (line: 517)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, java.lang.Object[ ]) (line: 323)
    at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$311.852190062.getObject()
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(java.lang.String, org.springframework.beans.factory.ObjectFactory) (line: 226)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(java.lang.String, java.lang.Class, java.lang.Object[ ], boolean) (line: 321)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(java.lang.String) (line: 202)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(java.lang.Object, org.springframework.beans.factory.config.RuntimeBeanReference) (line: 330)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(java.lang.Object, java.lang.Object) (line: 113)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(java.lang.String, org.springframework.beans.factory.config.BeanDefinition, org.springframework.beans.BeanWrapper, org.springframework.beans.PropertyValues) (line: 1699)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, org.springframework.beans.BeanWrapper) (line: 1444)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, java.lang.Object[ ]) (line: 594)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, java.lang.Object[ ]) (line: 517)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, java.lang.Object[ ]) (line: 323)
    at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$311.852190062.getObject()
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(java.lang.String, org.springframework.beans.factory.ObjectFactory) (line: 226)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(java.lang.String, java.lang.Class, java.lang.Object[ ], boolean) (line: 321)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(java.lang.String) (line: 202)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(java.lang.String, java.lang.Class, org.springframework.beans.factory.BeanFactory) (line: 276)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(org.springframework.beans.factory.config.DependencyDescriptor, java.lang.String, java.util.Set, org.springframework.beans.TypeConverter) (line: 1306)
    at org.springframework.context.annotation.ContextAnnotationAutowireCandidateResolver$1.getTarget() (line: 90)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(java.lang.Object, java.lang.reflect.Method, java.lang.Object[ ]) (line: 192)
    at com.sun.proxy.$Proxy183.findAll()
    at com.faforever.api.i18n.RepositoryMessageSource.loadMessages() (line: 30)
    at com.faforever.api.i18n.RepositoryMessageSource.afterPropertiesSet() (line: 79)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(java.lang.String, java.lang.Object, org.springframework.beans.factory.support.RootBeanDefinition) (line: 1855)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(java.lang.String, java.lang.Object, org.springframework.beans.factory.support.RootBeanDefinition) (line: 1792)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, java.lang.Object[ ]) (line: 595)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, java.lang.Object[ ]) (line: 517)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, java.lang.Object[ ]) (line: 323)
    at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$311.852190062.getObject()
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(java.lang.String, org.springframework.beans.factory.ObjectFactory) (line: 226)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(java.lang.String, java.lang.Class, java.lang.Object[ ], boolean) (line: 321)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(java.lang.String) (line: 202)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(java.lang.String, java.lang.Class, org.springframework.beans.factory.BeanFactory) (line: 276)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(org.springframework.beans.factory.config.DependencyDescriptor, java.lang.String, java.util.Set, org.springframework.beans.TypeConverter) (line: 1306)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(org.springframework.beans.factory.config.DependencyDescriptor, java.lang.String, java.util.Set, org.springframework.beans.TypeConverter) (line: 1226)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(java.lang.Object, java.lang.String, org.springframework.beans.PropertyValues) (line: 715)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(java.lang.Object, java.lang.String, org.springframework.beans.PropertyValues) (line: 130)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(org.springframework.beans.PropertyValues, java.lang.Object, java.lang.String) (line: 399)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, org.springframework.beans.BeanWrapper) (line: 1422)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, java.lang.Object[ ]) (line: 594)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, java.lang.Object[ ]) (line: 517)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, java.lang.Object[ ]) (line: 323)
    at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$311.852190062.getObject()
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(java.lang.String, org.springframework.beans.factory.ObjectFactory) (line: 226)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(java.lang.String, java.lang.Class, java.lang.Object[ ], boolean) (line: 321)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(java.lang.String) (line: 202)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons() (line: 895)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(org.springframework.beans.factory.config.ConfigurableListableBeanFactory) (line: 878)
    at org.springframework.context.support.AbstractApplicationContext.refresh() (line: 550)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh() (line: 143)
    at org.springframework.boot.SpringApplication.refresh(org.springframework.context.ConfigurableApplicationContext) (line: 758)
    at org.springframework.boot.SpringApplication.refresh(org.springframework.context.ApplicationContext) (line: 750)
    at org.springframework.boot.SpringApplication.refreshContext(org.springframework.context.ConfigurableApplicationContext) (line: 397)
    at org.springframework.boot.SpringApplication.run(java.lang.String[ ]) (line: 315)
    at org.springframework.boot.SpringApplication.run(java.lang.Class[ ], java.lang.String[ ]) (line: 1237)
    at org.springframework.boot.SpringApplication.run(java.lang.Class, java.lang.String[ ]) (line: 1226)
    at com.faforever.api.FafApiApplication.main(java.lang.String[ ]) (line: 15)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(java.lang.reflect.Method, java.lang.Object, java.lang.Object[ ])
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(java.lang.Object, java.lang.Object[ ]) (line: 62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(java.lang.Object, java.lang.Object[ ]) (line: 43)
    at java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[ ]) (line: 566)
    at com.intellij.rt.execution.application.AppMainV2.main(java.lang.String[ ]) (line: 128)

  Thread "task-1":
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(java.lang.String, boolean) (line: 183)
    at org.springframework.beans.factory.support.AbstractBeanFactory.isTypeMatch(java.lang.String, org.springframework.core.ResolvableType, boolean) (line: 517)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(org.springframework.core.ResolvableType, boolean, boolean) (line: 533)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(java.lang.Class, boolean, boolean) (line: 505)
    at org.springframework.beans.factory.BeanFactoryUtils.beanNamesForTypeIncludingAncestors(org.springframework.beans.factory.ListableBeanFactory, java.lang.Class, boolean, boolean) (line: 265)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(java.lang.String, java.lang.Class, org.springframework.beans.factory.config.DependencyDescriptor) (line: 1472)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(org.springframework.beans.factory.config.DependencyDescriptor, java.lang.String, java.util.Set, org.springframework.beans.TypeConverter) (line: 1269)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(org.springframework.beans.factory.config.DependencyDescriptor, java.lang.String, java.util.Set, org.springframework.beans.TypeConverter) (line: 1226)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(java.lang.Object, java.lang.String, org.springframework.beans.PropertyValues) (line: 715)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(java.lang.Object, java.lang.String, org.springframework.beans.PropertyValues) (line: 130)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(org.springframework.beans.PropertyValues, java.lang.Object, java.lang.String) (line: 399)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, org.springframework.beans.BeanWrapper) (line: 1422)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, java.lang.Object[ ]) (line: 594)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, java.lang.Object[ ]) (line: 517)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(java.lang.Class, int, boolean) (line: 353)
    at org.springframework.orm.hibernate5.SpringBeanContainer.createBean(java.lang.Class, org.hibernate.resource.beans.container.spi.BeanContainer$LifecycleOptions, org.hibernate.resource.beans.spi.BeanInstanceProducer) (line: 147)
    at org.springframework.orm.hibernate5.SpringBeanContainer.getBean(java.lang.Class, org.hibernate.resource.beans.container.spi.BeanContainer$LifecycleOptions, org.hibernate.resource.beans.spi.BeanInstanceProducer) (line: 105)
    at org.hibernate.resource.beans.internal.ManagedBeanRegistryImpl.getBean(java.lang.Class) (line: 61)
    at org.hibernate.jpa.event.internal.CallbackBuilderLegacyImpl.resolveEntityCallbacks(org.hibernate.annotations.common.reflection.XClass, org.hibernate.jpa.event.spi.CallbackType, org.hibernate.annotations.common.reflection.ReflectionManager) (line: 200)
    at org.hibernate.jpa.event.internal.CallbackBuilderLegacyImpl.buildCallbacksForEntity(java.lang.String, org.hibernate.jpa.event.spi.CallbackBuilder$CallbackRegistrar) (line: 74)
    at org.hibernate.event.service.internal.EventListenerRegistryImpl.prepare(org.hibernate.boot.spi.MetadataImplementor) (line: 146)
    at org.hibernate.boot.internal.MetadataImpl.initSessionFactory(org.hibernate.engine.spi.SessionFactoryImplementor) (line: 376)
    at org.hibernate.internal.SessionFactoryImpl.<init>(org.hibernate.boot.spi.MetadataImplementor, org.hibernate.boot.spi.SessionFactoryOptions) (line: 211)
    at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build() (line: 468)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build() (line: 1249)
    at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(javax.persistence.spi.PersistenceUnitInfo, java.util.Map) (line: 58)
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory() (line: 365)
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory() (line: 391)
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$$Lambda$769.2071551415.call()
    at java.util.concurrent.FutureTask.run() (line: 264)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) (line: 1128)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run() (line: 628)
    at java.lang.Thread.run() (line: 834)

Comment From: basven

Not sure if related to this change since setting spring.data.jpa.repositories.bootstrap-mode=default in my test application properties doesn't seem to help, but upgrading from 2.2.7 to 2.3.0 I see the following behavior: 1. Aspects around repositories show that the entityManager is 'open', but the underlying Session is in the 'closed' state. 2. 'could not initialize proxy' --> no Session exceptions when calling save on the repository.

For #1 we inject an entityManager in the aspect and noticed that the session is closed. This is only happening in the test environment; starting the war and calling some rest endpoint that calls in the end the repository does have the session 'open'. For #2. The following scenario: entityB = entityBrepository.findOne(id); <--- returns a proxied entity entityA = new entityA(entityB); entityArepository.save(entityA) <-- could not initialize proxy- no Session exception.

Tests are annotated as follows: @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT) @ContextConfiguration @DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_CLASS)

Update 1: Mmm, might be a different issue altogether. We have a bean that listens to the ContextRefreshEvent and loads data if so configured. Here is when I see the above failures. But I noticed that when I use this bean at application startup (so outside the integration test environment) it has the same errors. Again this is all working in 2.2.7

Update 2: So in 2.2.7 I receive 1 ContextRefreshEvent with source AnnotationConfigServletWebServerApplicationContext With 2.3.0 I receive 2 of those events from the same source. If I discard the first event and only try to load data when I receive the event the second time, the above errors magically disappear. So either I need to listen to a different event or that first event is emitted too soon? Anyhow this discussion probably should move elsewhere, just no clue where.

Comment From: wilkinsona

@basven Could you please open a new issue so that we can investigate? A minimal sample that reproduces the problem would be much appreciated. If you are receiving two ContextRefreshedEvents that's either a bug or there are two contexts involved. The latter would be true if you have configured management.server.port to run Actuator's HTTP endpoints on a separate port. This hasn't changed between 2.2 and 2.3 so may well not be the cause.

Comment From: hgarus

I've run into this after updating to Spring Boot 2.3.3 from 2.2

So far I've only seen deadlocks in my tests.

Deadlocks seem to have disappeared after switiching my DataJpaTests to BootstrapMode.DEFAULT and setting spring.data.jpa.repositories.bootstrap-mode to default.

A Thread Dump looks somewhat similar to ctmay4's:

JpaMetamodelMappingContext seems to be instantiated as a dependency of org.springframework.data.auditing.AuditingHandler.

"main@1" prio=5 tid=0x1 nid=NA waiting
  java.lang.Thread.State: WAITING
     blocks task-1@24187
      at jdk.internal.misc.Unsafe.park(Unsafe.java:-1)
      at java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
      at java.util.concurrent.FutureTask.awaitDone(FutureTask.java:447)
      at java.util.concurrent.FutureTask.get(FutureTask.java:190)
      at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.getNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:540)
      at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.invokeProxyMethod(AbstractEntityManagerFactoryBean.java:497)
      at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$ManagedEntityManagerFactoryInvocationHandler.invoke(AbstractEntityManagerFactoryBean.java:680)
      at com.sun.proxy.$Proxy212.getMetamodel(Unknown Source:-1)
      at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean$$Lambda$1393.242040834.apply(Unknown Source:-1)
      at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
      at java.util.Iterator.forEachRemaining(Iterator.java:133)
      at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
      at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
      at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
      at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)
      at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
      at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)
      at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.getMetamodels(JpaMetamodelMappingContextFactoryBean.java:106)
      at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:80)
      at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:44)
      at org.springframework.beans.factory.config.AbstractFactoryBean.afterPropertiesSet(AbstractFactoryBean.java:142)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1853)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1790)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
      at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
      at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$514.890491412.getObject(Unknown Source:-1)
      at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)
      - locked <0x5eec> (a java.util.concurrent.ConcurrentHashMap)
      at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
      at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:330)
      at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:113)
      at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:690)
      at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:196)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1356)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1203)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
      at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
      at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$514.890491412.getObject(Unknown Source:-1)
      at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)
      at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897)
      at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879)
      at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551)
      - locked <0x5f3a> (a java.lang.Object)
      at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
      at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
      at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
      at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:120)
      at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99)
      at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
      - locked <0x5f31> (a org.springframework.test.context.cache.DefaultContextCache)
      at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:123)
      at org.springframework.cloud.contract.wiremock.WireMockTestExecutionListener.applicationContextBroken(WireMockTestExecutionListener.java:125)
      at org.springframework.cloud.contract.wiremock.WireMockTestExecutionListener.beforeTestClass(WireMockTestExecutionListener.java:41)
      at org.springframework.test.context.TestContextManager.beforeTestClass(TestContextManager.java:213)
      at org.springframework.test.context.junit.jupiter.SpringExtension.beforeAll(SpringExtension.java:77)
      at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeBeforeAllCallbacks$7(ClassBasedTestDescriptor.java:359)
      at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor$$Lambda$279.154449611.execute(Unknown Source:-1)
      at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
      at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeBeforeAllCallbacks(ClassBasedTestDescriptor.java:359)
      at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.before(ClassBasedTestDescriptor.java:189)
      at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.before(ClassBasedTestDescriptor.java:78)
      at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:132)
      at org.junit.platform.engine.support.hierarchical.NodeTestTask$$Lambda$236.330551672.execute(Unknown Source:-1)
      at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
      at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
      at org.junit.platform.engine.support.hierarchical.NodeTestTask$$Lambda$235.644052207.invoke(Unknown Source:-1)
      at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
      at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
      at org.junit.platform.engine.support.hierarchical.NodeTestTask$$Lambda$234.1652764753.execute(Unknown Source:-1)
      at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
      at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
      at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
      at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService$$Lambda$240.1309129055.accept(Unknown Source:-1)
      at java.util.ArrayList.forEach(ArrayList.java:1541)
      at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
      at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
      at org.junit.platform.engine.support.hierarchical.NodeTestTask$$Lambda$236.330551672.execute(Unknown Source:-1)
      at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
      at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
      at org.junit.platform.engine.support.hierarchical.NodeTestTask$$Lambda$235.644052207.invoke(Unknown Source:-1)
      at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
      at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
      at org.junit.platform.engine.support.hierarchical.NodeTestTask$$Lambda$234.1652764753.execute(Unknown Source:-1)
      at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
      at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
      at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
      at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
      at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
      at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
      at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:248)
      at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$5(DefaultLauncher.java:211)
      at org.junit.platform.launcher.core.DefaultLauncher$$Lambda$189.1824837049.accept(Unknown Source:-1)
      at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:226)
      at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:199)
      at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:132)
      at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:69)
      at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
      at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
      at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)

"task-1@24187" prio=5 tid=0x82 nid=NA waiting for monitor entry
  java.lang.Thread.State: BLOCKED
     waiting for main@1 to release lock on <0x5eec> (a java.util.concurrent.ConcurrentHashMap)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getSingletonFactoryBeanForTypeCheck(AbstractAutowireCapableBeanFactory.java:986)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryBean(AbstractAutowireCapableBeanFactory.java:884)
      at org.springframework.beans.factory.support.AbstractBeanFactory.isTypeMatch(AbstractBeanFactory.java:619)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:536)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:503)
      at org.springframework.beans.factory.BeanFactoryUtils.beanNamesForTypeIncludingAncestors(BeanFactoryUtils.java:265)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1473)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1270)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227)
      at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:715)
      at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130)
      at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:353)
      at org.springframework.orm.hibernate5.SpringBeanContainer.createBean(SpringBeanContainer.java:147)
      at org.springframework.orm.hibernate5.SpringBeanContainer.getBean(SpringBeanContainer.java:105)
      at org.hibernate.resource.beans.internal.ManagedBeanRegistryImpl.getBean(ManagedBeanRegistryImpl.java:61)
      at org.hibernate.jpa.event.internal.CallbackBuilderLegacyImpl.resolveEntityCallbacks(CallbackBuilderLegacyImpl.java:200)
      at org.hibernate.jpa.event.internal.CallbackBuilderLegacyImpl.buildCallbacksForEntity(CallbackBuilderLegacyImpl.java:74)
      at org.hibernate.event.service.internal.EventListenerRegistryImpl.prepare(EventListenerRegistryImpl.java:146)
      at org.hibernate.boot.internal.MetadataImpl.initSessionFactory(MetadataImpl.java:379)
      at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:213)
      at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:469)
      at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1259)
      at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58)
      at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365)
      at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:391)
      at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$$Lambda$930.2131482093.call(Unknown Source:-1)
      at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:264)
      at java.util.concurrent.FutureTask.run(FutureTask.java:-1)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
      at java.lang.Thread.run(Thread.java:834)

Comment From: snicoll

@hgarus thank you for the report and sorry this is causing an issue for you. As indicated in the comment just above yours, could you please create a separate issue with a small sample that we can use to reproduce the issue?