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at the last night i had strange problem on one of production servers. all of tomcat executors threads were stopped on creation task instance for long time (minutes!). there are example of stacktrace. also i found problem like my there https://youtrack.jetbrains.com/issue/TW-38477
Java HotSpot(TM) 64-Bit Server VM (25.31-b07 mixed mode):
"thread-request-handler-2046-main" #2046 daemon prio=5 os_prio=0 tid=0x00007f09501af800 nid=0x2eb5 runnable [0x00007f094e8e8000]
java.lang.Thread.State: RUNNABLE
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2663)
at java.lang.Class.getConstructor0(Class.java:3067)
at java.lang.Class.newInstance(Class.java:408)
at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:403)
at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:394)
at java.security.AccessController.doPrivileged(Native Method)
at sun.reflect.MethodAccessorGenerator.generate(MethodAccessorGenerator.java:393)
at sun.reflect.MethodAccessorGenerator.generateSerializationConstructor(MethodAccessorGenerator.java:112)
at sun.reflect.ReflectionFactory.newConstructorForSerialization(ReflectionFactory.java:340)
at sun.reflect.GeneratedMethodAccessor73.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.springframework.objenesis.instantiator.sun.SunReflectionFactoryHelper.newConstructorForSerialization(SunReflectionFactoryHelper.java:45)
at org.springframework.objenesis.instantiator.sun.SunReflectionFactoryInstantiator.<init>(SunReflectionFactoryInstantiator.java:38)
at org.springframework.objenesis.strategy.StdInstantiatorStrategy.newInstantiatorOf(StdInstantiatorStrategy.java:58)
at org.springframework.objenesis.ObjenesisBase.getInstantiatorOf(ObjenesisBase.java:91)
at org.springframework.objenesis.ObjenesisBase.newInstance(ObjenesisBase.java:73)
at org.springframework.aop.framework.ObjenesisCglibAopProxy.createProxyClassAndInstance(ObjenesisCglibAopProxy.java:57)
at org.springframework.aop.framework.CglibAopProxy.getProxy(CglibAopProxy.java:202)
at org.springframework.aop.framework.ProxyFactory.getProxy(ProxyFactory.java:109)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.createProxy(AbstractAutoProxyCreator.java:447)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:333)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:293)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:422)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1579)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:204)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:322)
at ru.laximo.wsoem.ws.services.RequestDispatcher$$EnhancerBySpringCGLIB$$cd14773d.getCommandTask(<generated>)
at ru.laximo.wsoem.ws.services.RequestDispatcher.dispatch(RequestDispatcher.java:62)
at ru.laximo.wsoem.ws.webcatalog.CatalogImpl.QueryData(CatalogImpl.java:72)
@ivanenok
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ivanenok commented Jun 16, 2015

hmmm... one of possible reason can be starting this application with debugging option.

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