Performance regression when scheduling is enabled and context contains URL beans [SPR-14666]

[spring-projects-issues]

Andy Wilkinson opened SPR-14666 and commented

When scheduling is enabled and the context contains URL beans, context refresh becomes very slow. It appears to be due to this change which results in hashCode being called on each bean as a result of the new requiresDestruction method. When the bean is a URL this causes a host name look up, the stack of which is:

java.lang.Thread.State: RUNNABLE
	at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
	at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:907)
	at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1302)
	at java.net.InetAddress.getAllByName0(InetAddress.java:1255)
	at java.net.InetAddress.getAllByName(InetAddress.java:1171)
	at java.net.InetAddress.getAllByName(InetAddress.java:1105)
	at java.net.InetAddress.getByName(InetAddress.java:1055)
	at java.net.URLStreamHandler.getHostAddress(URLStreamHandler.java:436)
	- locked <0x00000007ab7abdf0> (a sun.net.www.protocol.http.Handler)
	at java.net.URLStreamHandler.hashCode(URLStreamHandler.java:353)
	at java.net.URL.hashCode(URL.java:878)
	- locked <0x00000007ab84c240> (a java.net.URL)
	at java.util.AbstractList.hashCode(AbstractList.java:541)
	at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936)
	at java.util.concurrent.ConcurrentHashMap.containsKey(ConcurrentHashMap.java:964)
	at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.requiresDestruction(ScheduledAnnotationBeanPostProcessor.java:423)
	at org.springframework.beans.factory.support.DisposableBeanAdapter.hasApplicableProcessors(DisposableBeanAdapter.java:431)
	at org.springframework.beans.factory.support.AbstractBeanFactory.requiresDestruction(AbstractBeanFactory.java:1628)
	at org.springframework.beans.factory.support.AbstractBeanFactory.registerDisposableBeanIfNecessary(AbstractBeanFactory.java:1645)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:586)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	- locked <0x000000078135afd0> (a java.util.concurrent.ConcurrentHashMap)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:776)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
	- locked <0x0000000780e56240> (a java.lang.Object)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:313)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1185)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1174)
	at de.malkusch.issue6813.Application.main(Application.java:10)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:483)
	at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run(AbstractRunMojo.java:483)
	at java.lang.Thread.run(Thread.java:745)

See the referenced Spring Boot issue for more details and for a sample project that reproduces the problem.

---

Affects: 4.3.2

Reference URL: spring-projects/spring-boot#6813

Issue Links:

• #17470 @Scheduled methods in @Lazy beans are not scheduled
• #16830 ScheduledAnnotationBeanPostProcessor should unregister tasks on destruction of individual beans

Referenced from: commits 480cd2c, bd24b97

1 votes, 5 watchers

[spring-projects-issues]

Juergen Hoeller commented

I've revised ScheduledAnnotationBeanPostProcessor to use synchronization against an IdentityHashMap since this is not performance-critical and we only really mean to check against our specific bean instance to begin with. To be backport to 4.3.3 tomorrow.

[spring-projects-issues]

Juergen Hoeller commented

Andy Wilkinson, could you double-check this against the latest 4.3.3.BUILD-SNAPSHOT please? I hope it does job... I haven't actually tried the effect with URL beans.

[spring-projects-issues]

Andy Wilkinson commented

It does the job. Thanks for the fix.