Auditing causes global lock contention during first initialization under high concurrency

[chengchangan]

"http-nio-8080-exec-5@25493" daemon prio=5 tid=0x74 nid=NA waiting for monitor entry
  java.lang.Thread.State: BLOCKED
	 blocks http-nio-8080-exec-6@25494
	 blocks http-nio-8080-exec-7@25495
	 waiting for @25668 to release lock on instance of java.util.concurrent.ConcurrentHashMap$ReservationNode(id=25667)
	at java.util.concurrent.ConcurrentHashMap.transfer(ConcurrentHashMap.java:2484)
	at java.util.concurrent.ConcurrentHashMap.addCount(ConcurrentHashMap.java:2351)
	at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1776)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.lambda$getBeanWrapperFor$1(MappingAuditableBeanWrapperFactory.java:84)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory$$Lambda/0x00007f3cd0cf9ab0.apply(Unknown Source:-1)
	at org.springframework.data.mapping.context.PersistentEntities.lambda$mapOnContext$3(PersistentEntities.java:149)
	at org.springframework.data.mapping.context.PersistentEntities$$Lambda/0x00007f3cd0d00000.apply(Unknown Source:-1)
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179)
	at java.util.Spliterators$ArraySpliterator.tryAdvance(Spliterators.java:1034)
	at java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:129)
	at java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:527)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:513)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:150)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:647)
	at org.springframework.data.mapping.context.PersistentEntities.mapOnContext(PersistentEntities.java:150)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.lambda$getBeanWrapperFor$3(MappingAuditableBeanWrapperFactory.java:82)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory$$Lambda/0x00007f3cd0cf9668.apply(Unknown Source:-1)
	at java.util.Optional.flatMap(Optional.java:289)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.getBeanWrapperFor(MappingAuditableBeanWrapperFactory.java:76)
	at org.springframework.data.auditing.AuditingHandlerSupport.touch(AuditingHandlerSupport.java:132)
	at org.springframework.data.auditing.AuditingHandlerSupport.markCreated(AuditingHandlerSupport.java:114)
	at org.springframework.data.auditing.AuditingHandler.markCreated(AuditingHandler.java:86)
	at org.springframework.data.jpa.domain.support.AuditingEntityListener.touchForCreate(AuditingEntityListener.java:92)
	at java.lang.invoke.DirectMethodHandle$Holder.invokeVirtual(DirectMethodHandle$Holder:-1)
	at java.lang.invoke.LambdaForm$MH/0x00007f3cd0db9400.invoke(LambdaForm$MH:-1)
	at java.lang.invoke.Invokers$Holder.invokeExact_MT(Invokers$Holder:-1)


----------------------------------
"data-process-scheduler-17@25562" prio=5 tid=0xbb nid=NA waiting for monitor entry
  java.lang.Thread.State: BLOCKED
	 waiting for @25743 to release lock on instance of java.util.concurrent.ConcurrentHashMap$Node(id=25742)
	at java.util.concurrent.ConcurrentHashMap.transfer(ConcurrentHashMap.java:2483)
	at java.util.concurrent.ConcurrentHashMap.helpTransfer(ConcurrentHashMap.java:2374)
	at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1719)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.lambda$getBeanWrapperFor$1(MappingAuditableBeanWrapperFactory.java:84)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory$$Lambda/0x00007f3cd0cf9ab0.apply(Unknown Source:-1)
	at org.springframework.data.mapping.context.PersistentEntities.lambda$mapOnContext$3(PersistentEntities.java:149)
	at org.springframework.data.mapping.context.PersistentEntities$$Lambda/0x00007f3cd0d00000.apply(Unknown Source:-1)
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179)
	at java.util.Spliterators$ArraySpliterator.tryAdvance(Spliterators.java:1034)
	at java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:129)
	at java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:527)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:513)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:150)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:647)
	at org.springframework.data.mapping.context.PersistentEntities.mapOnContext(PersistentEntities.java:150)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.lambda$getBeanWrapperFor$3(MappingAuditableBeanWrapperFactory.java:82)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory$$Lambda/0x00007f3cd0cf9668.apply(Unknown Source:-1)
	at java.util.Optional.flatMap(Optional.java:289)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.getBeanWrapperFor(MappingAuditableBeanWrapperFactory.java:76)
	at org.springframework.data.auditing.AuditingHandlerSupport.touch(AuditingHandlerSupport.java:132)
	at org.springframework.data.auditing.AuditingHandlerSupport.markCreated(AuditingHandlerSupport.java:114)
	at org.springframework.data.auditing.AuditingHandler.markCreated(AuditingHandler.java:86)
	at org.springframework.data.jpa.domain.support.AuditingEntityListener.touchForCreate(AuditingEntityListener.java:92)
	at java.lang.invoke.DirectMethodHandle$Holder.invokeVirtual(DirectMethodHandle$Holder:-1)
	at java.lang.invoke.LambdaForm$MH/0x00007f3cd0db9400.invoke(LambdaForm$MH:-1)
	at java.lang.invoke.Invokers$Holder.invokeExact_MT(Invokers$Holder:-1)
	at jdk.internal.reflect.DirectMethodHandleAccessor.invokeImpl(DirectMethodHandleAccessor.java:154)
	at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.lang.reflect.Method.invoke(Method.java:580)
	at org.hibernate.jpa.event.internal.ListenerCallback.performCallback(ListenerCallback.java:55)
	at org.hibernate.jpa.event.internal.CallbackRegistryImpl.callback(CallbackRegistryImpl.java:123)
	at org.hibernate.jpa.event.internal.CallbackRegistryImpl.preCreate(CallbackRegistryImpl.java:72)
	at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:199)
	at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:136)
	at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:177)
	at org.hibernate.event.internal.DefaultPersistEventListener.persist(DefaultPersistEventListener.java:95)
	at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:79)
	at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:55)
	at org.hibernate.internal.SessionImpl$$Lambda/0x00007f3cd0cfc680.accept(Unknown Source:-1)
	at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:127)
	at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:761)
	at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:745)
	at java.lang.invoke.LambdaForm$DMH/0x00007f3cd014c000.invokeInterface(LambdaForm$DMH:-1)
	at java.lang.invoke.LambdaForm$MH/0x00007f3cd0db9000.invoke(LambdaForm$MH:-1)
	at java.lang.invoke.Invokers$Holder.invokeExact_MT(Invokers$Holder:-1)
	at jdk.internal.reflect.DirectMethodHandleAccessor.invokeImpl(DirectMethodHandleAccessor.java:154)
	at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.lang.reflect.Method.invoke(Method.java:580)
	at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:320)
	at jdk.proxy2.$Proxy204.persist(Unknown Source:-1)
	at org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:654)
	at java.lang.invoke.LambdaForm$DMH/0x00007f3cd014d000.invokeVirtual(LambdaForm$DMH:-1)
	at java.lang.invoke.LambdaForm$MH/0x00007f3cd0fb4000.invoke(LambdaForm$MH:-1)
	at java.lang.invoke.Invokers$Holder.invokeExact_MT(Invokers$Holder:-1)

--------------------------------------------------------

"@25668" tid=0x2348 nid=NA virtual waiting
  java.lang.Thread.State: WAITING
	 blocks http-nio-8080-exec-5@25493
	 blocks @25669
	at java.base/jdk.internal.misc.Unsafe.park(Native Method)
	at java.base/java.lang.VirtualThread.parkOnCarrierThread(VirtualThread.java:675)
	at java.base/java.lang.VirtualThread.park(VirtualThread.java:607)
	at java.base/java.lang.System$2.parkVirtualThread(System.java:2643)
	at java.base/jdk.internal.misc.VirtualThreads.park(VirtualThreads.java:54)
	at java.base/java.util.concurrent.locks.LockSupport.park(LockSupport.java:219)
	at java.base/java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:754)
	at java.base/java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireShared(AbstractQueuedSynchronizer.java:1079)
	at java.base/java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.lock(ReentrantReadWriteLock.java:738)
	at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:294)
	at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:99)
	at org.springframework.data.mapping.context.MappingContext.getRequiredPersistentEntity(MappingContext.java:114)
	at org.springframework.data.mapping.context.PersistentPropertyPathFactory.from(PersistentPropertyPathFactory.java:235)
	at org.springframework.data.mapping.context.PersistentPropertyPathFactory.from(PersistentPropertyPathFactory.java:166)
	at org.springframework.data.mapping.context.AbstractMappingContext.doFindPersistentPropertyPaths(AbstractMappingContext.java:376)
	at org.springframework.data.jpa.mapping.JpaMetamodelMappingContext.findPersistentPropertyPaths(JpaMetamodelMappingContext.java:89)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory$MappingAuditingMetadata.findPropertyPaths(MappingAuditableBeanWrapperFactory.java:150)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory$MappingAuditingMetadata.<init>(MappingAuditableBeanWrapperFactory.java:125)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.lambda$getBeanWrapperFor$0(MappingAuditableBeanWrapperFactory.java:85)
	at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1708)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.lambda$getBeanWrapperFor$1(MappingAuditableBeanWrapperFactory.java:84)
	  - locked <0x6443> (a java.util.concurrent.ConcurrentHashMap$ReservationNode)
	at org.springframework.data.mapping.context.PersistentEntities.lambda$mapOnContext$3(PersistentEntities.java:149)
	at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179)
	at java.base/java.util.Spliterators$ArraySpliterator.tryAdvance(Spliterators.java:1034)
	at java.base/java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:129)
	at java.base/java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:527)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:513)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:150)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:647)
	at org.springframework.data.mapping.context.PersistentEntities.mapOnContext(PersistentEntities.java:150)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.lambda$getBeanWrapperFor$3(MappingAuditableBeanWrapperFactory.java:82)
	at java.base/java.util.Optional.flatMap(Optional.java:289)

------------------------------------------------
"@25743" tid=0x234a nid=NA virtual waiting
  java.lang.Thread.State: WAITING
	 blocks data-process-scheduler-17@25562
	at java.base/jdk.internal.misc.Unsafe.park(Native Method)
	at java.base/java.lang.VirtualThread.parkOnCarrierThread(VirtualThread.java:675)
	at java.base/java.lang.VirtualThread.park(VirtualThread.java:607)
	at java.base/java.lang.System$2.parkVirtualThread(System.java:2643)
	at java.base/jdk.internal.misc.VirtualThreads.park(VirtualThreads.java:54)
	at java.base/java.util.concurrent.locks.LockSupport.park(LockSupport.java:219)
	at java.base/java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:754)
	at java.base/java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireShared(AbstractQueuedSynchronizer.java:1079)
	at java.base/java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.lock(ReentrantReadWriteLock.java:738)
	at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:294)
	at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:99)
	at org.springframework.data.mapping.context.MappingContext.getRequiredPersistentEntity(MappingContext.java:114)
	at org.springframework.data.mapping.context.PersistentPropertyPathFactory.from(PersistentPropertyPathFactory.java:235)
	at org.springframework.data.mapping.context.PersistentPropertyPathFactory.from(PersistentPropertyPathFactory.java:166)
	at org.springframework.data.mapping.context.AbstractMappingContext.doFindPersistentPropertyPaths(AbstractMappingContext.java:376)
	at org.springframework.data.jpa.mapping.JpaMetamodelMappingContext.findPersistentPropertyPaths(JpaMetamodelMappingContext.java:89)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory$MappingAuditingMetadata.findPropertyPaths(MappingAuditableBeanWrapperFactory.java:150)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory$MappingAuditingMetadata.<init>(MappingAuditableBeanWrapperFactory.java:125)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.lambda$getBeanWrapperFor$0(MappingAuditableBeanWrapperFactory.java:85)
	at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1740)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.lambda$getBeanWrapperFor$1(MappingAuditableBeanWrapperFactory.java:84)
	  - locked <0x648e> (a java.util.concurrent.ConcurrentHashMap$Node)
	at org.springframework.data.mapping.context.PersistentEntities.lambda$mapOnContext$3(PersistentEntities.java:149)
	at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179)
	at java.base/java.util.Spliterators$ArraySpliterator.tryAdvance(Spliterators.java:1034)
	at java.base/java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:129)
	at java.base/java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:527)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:513)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:150)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:647)
	at org.springframework.data.mapping.context.PersistentEntities.mapOnContext(PersistentEntities.java:150)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.lambda$getBeanWrapperFor$3(MappingAuditableBeanWrapperFactory.java:82)
	at java.base/java.util.Optional.flatMap(Optional.java:289)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.getBeanWrapperFor(MappingAuditableBeanWrapperFactory.java:76)
	at org.springframework.data.auditing.AuditingHandlerSupport.touch(AuditingHandlerSupport.java:132)
	at org.springframework.data.auditing.AuditingHandlerSupport.markCreated(AuditingHandlerSupport.java:114)
	at org.springframework.data.auditing.AuditingHandler.markCreated(AuditingHandler.java:86)
	at org.springframework.data.jpa.domain.support.AuditingEntityListener.touchForCreate(AuditingEntityListener.java:92)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.hibernate.jpa.event.internal.ListenerCallback.performCallback(ListenerCallback.java:55)
	at org.hibernate.jpa.event.internal.CallbackRegistryImpl.callback(CallbackRegistryImpl.java:123)
	at org.hibernate.jpa.event.internal.CallbackRegistryImpl.preCreate(CallbackRegistryImpl.java:72)
	at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:199)
	at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:136)
	at org.hibernate.event.internal.DefaultMergeEventListener.saveTransientEntity(DefaultMergeEventListener.java:384)
	at org.hibernate.event.internal.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:305)
	at org.hibernate.event.internal.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:432)
	at org.hibernate.event.internal.DefaultMergeEventListener.merge(DefaultMergeEventListener.java:214)
	at org.hibernate.event.internal.DefaultMergeEventListener.doMerge(DefaultMergeEventListener.java:152)
	at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:136)
	at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:89)
	at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:127)
	at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:854)
	at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:840)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:320)
	at jdk.proxy2/jdk.proxy2.$Proxy204.merge(Unknown Source)

-------------------------------------
"@25812" tid=0x2350 nid=NA virtual waiting
  java.lang.Thread.State: WAITING
	at java.base/java.lang.VirtualThread.park(VirtualThread.java:596)
	at java.base/java.lang.System$2.parkVirtualThread(System.java:2643)
	at java.base/jdk.internal.misc.VirtualThreads.park(VirtualThreads.java:54)
	at java.base/java.util.concurrent.locks.LockSupport.park(LockSupport.java:219)
	at java.base/java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:754)
	at java.base/java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:990)
	at java.base/java.util.concurrent.locks.ReentrantReadWriteLock$WriteLock.lock(ReentrantReadWriteLock.java:959)
	at org.springframework.data.mapping.context.AbstractMappingContext.addPersistentEntity(AbstractMappingContext.java:417)
	at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:322)
	at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:248)
	at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:99)
	at org.springframework.data.mapping.context.PersistentEntities.lambda$mapOnContext$2(PersistentEntities.java:148)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:178)
	at java.base/java.util.Spliterators$ArraySpliterator.tryAdvance(Spliterators.java:1034)
	at java.base/java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:129)
	at java.base/java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:527)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:513)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:150)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:647)
	at org.springframework.data.mapping.context.PersistentEntities.mapOnContext(PersistentEntities.java:150)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.lambda$getBeanWrapperFor$3(MappingAuditableBeanWrapperFactory.java:82)
	at java.base/java.util.Optional.flatMap(Optional.java:289)
	at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.getBeanWrapperFor(MappingAuditableBeanWrapperFactory.java:76)
	at org.springframework.data.auditing.AuditingHandlerSupport.touch(AuditingHandlerSupport.java:132)
	at org.springframework.data.auditing.AuditingHandlerSupport.markCreated(AuditingHandlerSupport.java:114)
	at org.springframework.data.auditing.AuditingHandler.markCreated(AuditingHandler.java:86)
	at org.springframework.data.jpa.domain.support.AuditingEntityListener.touchForCreate(AuditingEntityListener.java:92)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.hibernate.jpa.event.internal.ListenerCallback.performCallback(ListenerCallback.java:55)
	at org.hibernate.jpa.event.internal.CallbackRegistryImpl.callback(CallbackRegistryImpl.java:123)
	at org.hibernate.jpa.event.internal.CallbackRegistryImpl.preCreate(CallbackRegistryImpl.java:72)
	at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:199)
	at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:136)
	at org.hibernate.event.internal.DefaultMergeEventListener.saveTransientEntity(DefaultMergeEventListener.java:384)
	at org.hibernate.event.internal.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:305)
	at org.hibernate.event.internal.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:432)
	at org.hibernate.event.internal.DefaultMergeEventListener.merge(DefaultMergeEventListener.java:214)
	at org.hibernate.event.internal.DefaultMergeEventListener.doMerge(DefaultMergeEventListener.java:152)
	at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:136)
	at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:89)
	at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:127)
	at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:854)
	at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:840)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:320)
	at jdk.proxy2/jdk.proxy2.$Proxy204.merge(Unknown Source)

Environment

• Spring Data JPA: 3.5.7
• Hibernate: 6.6.x
• Database: mysql 8.0
• Java: java 21

[mp911de]

Thanks for reaching out. Contention is caused because Java types are seen the first time by the involved components. Is the contention causing any delays or noticeable side effects, or is this only an observation?

I've pushed a branch and our CI has published artifacts containing that change with the version 4.1.0-GH-3441-SNAPSHOT.

Care to upgrade to version 4.1.0-GH-3441-SNAPSHOT, available from https://repos.spring.io/snapshot/?

<dependencies>
    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-commons</artifactId>
        <version>4.1.0-GH-3441-SNAPSHOT</version>
    </dependency>
</dependencies>

<repositories>
    <repository>
        <id>spring-snapshot</id>
        <url>https://repo.spring.io/snapshot</url>
        <snapshots>
            <enabled>true</enabled>
        </snapshots>
    </repository>
</repositories>

You will also need to register a JpaMetamodelMappingContext bean, ideally in the same class that is also annotated with @EnableJpaAuditing to ensure proper bean registration visibility with the following code:

@Bean
JpaMetamodelMappingContext jpaMappingContext(ObjectProvider<EntityManagerFactory> entityManagerFactories) {

	Set<Metamodel> metamodels = entityManagerFactories.stream().map(EntityManagerFactory::getMetamodel)
			.collect(Collectors.toSet());

	List<? extends Class<?>> managedTypes = metamodels.stream().flatMap(it -> it.getManagedTypes().stream())
			.map(Type::getJavaType).toList();

	JpaMetamodelMappingContext context = new JpaMetamodelMappingContext(metamodels);
	context.setManagedTypes(ManagedTypes.fromIterable(managedTypes));

	return context;
}

MappingAuditableBeanWrapperFactory will warm its metadata cache with known entities beforehand and that should reduce any contention impact. Please let us know how this goes.

[chengchangan]

I cannot upgrade the project from springboot 3.4 to 4.x，Is there any other way to solve this?

[chengchangan]

Based on your suggested fix, I preloaded the JPA metadata/entities during application startup.
This avoids the lazy initialization under concurrent access and effectively resolves the issue.

Thank you very much for the insight and guidance — it was really helpful.

   @Autowired
    private EntityManager entityManager;

    @Autowired
    private AuditingHandler auditingHandler;

    @EventListener(ApplicationReadyEvent.class)
    public void warmUp() {

        entityManager.getMetamodel().getEntities().forEach(entityType -> {
            Class<?> javaType = entityType.getJavaType();
            if (Modifier.isAbstract(javaType.getModifiers())) {
                return;
            }

            try {
                Object dummyEntity = javaType.getDeclaredConstructor().newInstance();
                auditingHandler.markCreated(dummyEntity);
                log.info("Jpa warmUp {}", javaType.getName());
            } catch (Exception ex) {
                log.warn("Jpa warmUp,error:", ex);
            }
        });
    }