Thomas Heigl ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiYzliMGViYjFm... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16001?atlOrigin=eyJpIjoiYzliMG... ) HHH-16001 ( https://hibernate.atlassian.net/browse/HHH-16001?atlOrigin=eyJpIjoiYzliMG... ) CacheKeyImplementation is not serializable for some types ( https://hibernate.atlassian.net/browse/HHH-16001?atlOrigin=eyJpIjoiYzliMG... ) Issue Type: Bug Affects Versions: 5.6.14 Assignee: Unassigned Components: hibernate-core Created: 07/Jan/2023 02:38 AM Priority: Major Reporter: Thomas Heigl ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) This was originally reported to as a bug ( https://github.com/EsotericSoftware/kryo/issues/934 ) to my project, but I think that this is something that has to be resolved in Hibernate itself. CacheKeyImplementation implements Serializable, but cache keys for some types have fields that are not serializable. See the following stacktrace: Caused by: org.hibernate.cache.CacheException: com.esotericsoftware.kryo.KryoException: java.lang.reflect.InaccessibleObjectException: Unable to make field private transient volatile boolean java.lang.reflect.Executable.hasRealParameterData accessible: module java.base does not "opens java.lang.reflect" to unnamed module @2c13da15 Serialization trace: getterMethod (org.hibernate.property.access.spi.GetterFieldImpl) getters (org.hibernate.tuple.component.PojoComponentTuplizer) componentTuplizer (org.hibernate.type.EmbeddedComponentType) type (org.hibernate.cache.internal.CacheKeyImplementation) at org.redisson.hibernate.RedissonStorage.evictData(RedissonStorage.java:183) at org.hibernate.cache.spi.support.StorageAccess.removeFromCache(StorageAccess.java:35) at org.hibernate.cache.spi.support.AbstractCachedDomainDataAccess.remove(AbstractCachedDomainDataAccess.java:91) at org.hibernate.action.internal.CollectionAction.evict(CollectionAction.java:140) at org.hibernate.action.internal.CollectionRecreateAction.execute(CollectionRecreateAction.java:52) at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604) at org.hibernate.engine.spi.ActionQueue.lambda$executeActions$1(ActionQueue.java:478) at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:475) at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:344) at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40) at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:107) at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1407) ... 4 more Cache keys for org.hibernate.type.EmbeddedComponentType contain a reference to java.lang.reflect.Field via org.hibernate.tuple.component.PojoComponentTuplizer. Classes in java.lang.reflect are not serializable. This issue has been resolved in Hibernate 6 where cache keys no longer reference the type itself, but the disassembled state of the type. Does it make sense to backport the changes from to cache keys from Hibernate 6 to 5? ( https://hibernate.atlassian.net/browse/HHH-16001#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16001#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100213- sha1:f908df2 )