Error creating bean at shutdown

Camunda 7 Topics Discussion & Questions
1

Hi,

we are using the @ExternalTaskSubscription(“xxx”) annotation in our project. And we are using more than one in our spring boot application.
We have the problem that if we shutdown our spring boot app we got this exception for every externaltasksubscription:

org.springframework.beans.factory.BeanCreationNotAllowedException: Error creating bean with name 'xxx': Singleton bean creation not allowed while singletons of this factory are in destruction (Do not request a bean from a BeanFactory in a destroy method implementation!)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:220)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
	at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1154)
	at org.springframework.context.event.ApplicationListenerMethodAdapter.getTargetBean(ApplicationListenerMethodAdapter.java:371)
	at org.springframework.context.event.ApplicationListenerMethodAdapter.doInvoke(ApplicationListenerMethodAdapter.java:336)
	at org.springframework.context.event.ApplicationListenerMethodAdapter.processEvent(ApplicationListenerMethodAdapter.java:229)
	at org.springframework.context.event.ApplicationListenerMethodAdapter.onApplicationEvent(ApplicationListenerMethodAdapter.java:166)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:421)
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:427)
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:378)
	at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:1058)
	at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:1021)
	at org.springframework.cloud.context.named.NamedContextFactory.destroy(NamedContextFactory.java:92)
	at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:213)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean(DefaultSingletonBeanRegistry.java:587)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton(DefaultSingletonBeanRegistry.java:559)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingleton(DefaultListableBeanFactory.java:1161)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:520)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingletons(DefaultListableBeanFactory.java:1154)
	at org.springframework.context.support.AbstractApplicationContext.destroyBeans(AbstractApplicationContext.java:1106)
	at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:1075)
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.doClose(ServletWebServerApplicationContext.java:172)
	at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:1021)
	at org.springframework.boot.SpringApplicationShutdownHook.closeAndWait(SpringApplicationShutdownHook.java:145)
	at java.base/java.lang.Iterable.forEach(Iterable.java:75)
	at org.springframework.boot.SpringApplicationShutdownHook.run(SpringApplicationShutdownHook.java:114)
	at java.base/java.lang.Thread.run(Thread.java:833)

How can we fix this? What is wrong with our implementation?

regards,
Frank

2

Would you please share Camunda version and JDK version.

3

Hi,

we have the problem with versions 7.15; 7.16 and 7.17
And we are using java 17.

Frank

4

For me it worked after removing tomcat dependency.

5