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Posted to commits@kie.apache.org by "thiagoelg (via GitHub)" <gi...@apache.org> on 2026/09/11 19:27:25 UTC
[I] Dev mode: "EntityManagerFactory is closed" after a few live reloads when kogito-addons-quarkus-data-index-jpa is used [incubator-kie]
thiagoelg opened a new issue, #7106:
URL: https://github.com/apache/incubator-kie/issues/7106
## Describe the bug
When `kogito-addons-quarkus-data-index-jpa` is on the classpath, a Quarkus dev mode application stops working after a few live reloads. It fails to start with `java.lang.IllegalStateException: EntityManagerFactory is closed` and never recovers.
**What goes wrong:**
`KogitoBeanProducer` produces the CDI `UnitOfWorkManager` bean by returning a JVM-wide static singleton, `StaticUnitOfWorkManger.staticUnitOfWorkManager()`. Quarkus dev mode throws the application away on each reload, but it does not throw that static object away, because the class holding it comes from a dependency JAR that the base runtime ClassLoader keeps loaded.
So the same `UnitOfWorkManager`, and the same `EventManager` inside it, is reused by every reload. Each restart adds its `EventPublisher`s to it, and `addPublisher` only ever adds — there is no matching remove. After a few reloads, publishing an event calls publishers that belong to applications which already shut down. Those old publishers still point at an `EntityManagerFactory` that was closed when their application stopped, which is the error above.
The data index add-on is not the bug. It is just the only publisher that opens a Hibernate session straight away, so it is the first one to fail visibly.
Reproducer, with public dependencies only and full details: https://github.com/thiagoelg/quarkus-dev-mode-emf-closed-repro
## Expected behavior
Each dev mode live reload starts a clean application. Event publishers from earlier reloads are discarded with the application they belong to.
## Actual behavior
The first start and the first reload work. From the second reload the application fails to start, requests return HTTP 500, and it never recovers.
```
Caused by: java.lang.IllegalStateException: EntityManagerFactory is closed
at org.hibernate.internal.SessionFactoryImpl.validateNotClosed(SessionFactoryImpl.java:587)
at io.quarkus.hibernate.orm.runtime.session.TransactionScopedSession.find(TransactionScopedSession.java:199)
at org.kie.kogito.index.jpa.storage.AbstractJPAStorageFetcher.get(AbstractJPAStorageFetcher.java:91)
at org.kie.kogito.index.service.IndexingService.indexProcessDefinition(IndexingService.java:98)
at org.kie.kogito.index.addon.event.DataIndexEventPublisher.publish(DataIndexEventPublisher.java:60)
at org.kie.kogito.event.impl.BaseEventManager.publish(BaseEventManager.java:58)
at org.kie.kogito.services.registry.ProcessDefinitionEventRegistry.register(ProcessDefinitionEventRegistry.java:77)
at org.kie.kogito.quarkus.registry.ProcessDefinitionRegistration.onStartUp(ProcessDefinitionRegistration.java:53)
```
Full stack trace and logs: https://github.com/thiagoelg/quarkus-dev-mode-emf-closed-repro
## How to Reproduce?
https://github.com/thiagoelg/quarkus-dev-mode-emf-closed-repro has the project and a `reproduce.sh` script that does all of this automatically.
1. Build `apache/incubator-kie` 999-SNAPSHOT locally.
2. Run `mvn quarkus:dev` in the reproducer and POST to `/LoadTest` → 201.
3. Edit the BPMN file to trigger a live reload, then POST again → 201.
4. Edit it again, then POST again → 500, `EntityManagerFactory is closed`.
## Output of `uname -a` or `ver`
```
Darwin <redacted> 25.5.0 Darwin Kernel Version 25.5.0: Mon Apr 27 20:41:15 PDT 2026; root:xnu-12377.121.6~2/RELEASE_ARM64_T6041 arm64 arm Darwin
```
## Output of `java -version`
```
openjdk version "17.0.9" 2023-10-17
OpenJDK Runtime Environment Temurin-17.0.9+9 (build 17.0.9+9)
OpenJDK 64-Bit Server VM Temurin-17.0.9+9 (build 17.0.9+9, mixed mode)
```
## GraalVM version (if different from Java)
n/a (JVM mode)
## Kogito version or git rev (or at least Quarkus version if you are using Kogito via Quarkus platform BOM)
`apache/incubator-kie` `999-SNAPSHOT` (main), Quarkus 3.33.3.2
## Build tool (ie. output of `mvnw --version` or `gradlew --version`)
```
Apache Maven 3.9.16 (2bdd9fddda4b155ebf8000e807eb73fd829a51d5)
```
## Additional information
A probe logged object identities at each dev mode start. `Application` is a new object every time, as it should be. The `UnitOfWorkManager` and its `EventManager` are the same objects every time, and the publisher count grows by one per reload:
| Start | Application | UnitOfWorkManager | EventManager | Publishers |
|---|---|---|---|---|
| restart no:0 | `@2b15af5c` | `DefaultUnitOfWorkManager@135ba` | `@78f53ca9` | 1 |
| restart no:1 | `@41d76578` | `DefaultUnitOfWorkManager@135ba` | `@78f53ca9` | 2 |
| restart no:2 | `@266a08bf` | `DefaultUnitOfWorkManager@135ba` | `@78f53ca9` | 3 |
| restart no:3 | `@6637bbb9` | `DefaultUnitOfWorkManager@135ba` | `@78f53ca9` | 4 |
| restart no:4 | `@72a2ae1f` | `DefaultUnitOfWorkManager@135ba` | `@78f53ca9` | 5 |
`AbstractProcessConfig` leaks `UnitOfWorkEventListener`s the same way, because `DefaultUnitOfWorkManager.register` is also add-only.
Removing `kogito-addons-quarkus-data-index-jpa` makes the reloads clean. A plain Quarkus application with the same shape does not reproduce it — there is no static event manager in Quarkus itself.
Which reload fails first depends on when an old publisher first hits a closed factory. The growth is steady, so a failure is unavoidable; here it is consistently the second reload.
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Re: [I] Dev mode: "EntityManagerFactory is closed" after a few live reloads when kogito-addons-quarkus-data-index-jpa is used [incubator-kie]
Posted by "thiagoelg (via GitHub)" <gi...@apache.org>.
thiagoelg commented on issue #7106:
URL: https://github.com/apache/incubator-kie/issues/7106#issuecomment-5698881794
Fixed in https://github.com/apache/incubator-kie/pull/7107
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Re: [I] Dev mode: "EntityManagerFactory is closed" after a few live reloads when kogito-addons-quarkus-data-index-jpa is used [incubator-kie]
Posted by "thiagoelg (via GitHub)" <gi...@apache.org>.
thiagoelg closed issue #7106: Dev mode: "EntityManagerFactory is closed" after a few live reloads when kogito-addons-quarkus-data-index-jpa is used
URL: https://github.com/apache/incubator-kie/issues/7106
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