Hello all,
While running a load test against a system using JAXB 2.2.4, we found a bug related to unsynchronized HashMap access. I'm copying part of the stack trace below. I don't know much about the internals of JAXB, but I see a lot of methods with generate/initialize/create in their names, so I can see why the caller wouldn't see a need to synchronize the JaxWsProxyFactoryBean.create() call. The Map that gets corrupted comes from JAXBContextImpl.typeInfoSetCache. I also looked at 2.2.6 but didn't see a fix.
In the thread dump there were over 40 of these:
"http--0.0.0.0-8180-35" daemon prio=6 tid=0x0000000010b98800 nid=0x1b44 runnable [0x000000001883c000]
java.lang.Thread.State: RUNNABLE
at java.util.HashMap.get(HashMap.java:320)
at com.sun.xml.bind.v2.model.impl.TypeInfoSetImpl.getXmlNs(TypeInfoSetImpl.java:341)
at com.sun.xml.bind.v2.schemagen.XmlSchemaGenerator$Namespace.writeTo(XmlSchemaGenerator.java:613)
at com.sun.xml.bind.v2.schemagen.XmlSchemaGenerator$Namespace.access$700(XmlSchemaGenerator.java:499)
at com.sun.xml.bind.v2.schemagen.XmlSchemaGenerator.write(XmlSchemaGenerator.java:481)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.generateSchema(JAXBContextImpl.java:822)
at org.apache.cxf.jaxb.JAXBUtils.generateJaxbSchemas(JAXBUtils.java:771)
at org.apache.cxf.jaxb.JAXBDataBinding.generateJaxbSchemas(JAXBDataBinding.java:396)
at org.apache.cxf.jaxb.JAXBDataBinding.initialize(JAXBDataBinding.java:323)
- locked < 0x00000007a7908180> (a org.apache.cxf.jaxb.JAXBDataBinding)
at org.apache.cxf.service.factory.AbstractServiceFactoryBean.initializeDataBindings(AbstractServiceFactoryBean.java:86)
at org.apache.cxf.service.factory.ReflectionServiceFactoryBean.buildServiceFromClass(ReflectionServiceFactoryBean.java:445)
at org.apache.cxf.jaxws.support.JaxWsServiceFactoryBean.buildServiceFromClass(JaxWsServiceFactoryBean.java:682)
at org.apache.cxf.service.factory.ReflectionServiceFactoryBean.initializeServiceModel(ReflectionServiceFactoryBean.java:508)
at org.apache.cxf.service.factory.ReflectionServiceFactoryBean.create(ReflectionServiceFactoryBean.java:242)
- locked < 0x00000007a7908280> (a org.apache.cxf.jaxws.support.JaxWsServiceFactoryBean)
at org.apache.cxf.jaxws.support.JaxWsServiceFactoryBean.create(JaxWsServiceFactoryBean.java:202)
at org.apache.cxf.frontend.AbstractWSDLBasedEndpointFactory.createEndpoint(AbstractWSDLBasedEndpointFactory.java:101)
at org.apache.cxf.frontend.ClientFactoryBean.create(ClientFactoryBean.java:90)
at org.apache.cxf.frontend.ClientProxyFactoryBean.create(ClientProxyFactoryBean.java:155)
- locked < 0x00000007a7908378> (a org.apache.cxf.jaxws.JaxWsProxyFactoryBean)
at org.apache.cxf.jaxws.JaxWsProxyFactoryBean.create(JaxWsProxyFactoryBean.java:153)
- locked < 0x00000007a7908378> (a org.apache.cxf.jaxws.JaxWsProxyFactoryBean)
at org.apache.cxf.jaxws.JaxWsProxyFactoryBean$create.call(Unknown Source)
Thanks
John