[rules-users] Problem importing assets using REST API

[calcacuervo]

Hi Guys!

I am importing lot of assets to guvnor using rest API. And sometimes I get
the following error:

02:33:14,718 WARN  [org.apache.jackrabbit.core.session.SessionState]
(http--0.0.0.0-8080-80) Attempt to perform session.save() while another
thread is concurrently writing to session-guest-3. Blocking until the other
thread is finished using this session. Please review your code to avoid
concurrent use of a session.: java.lang.Exception: Stack trace of concurrent
access to session-guest-3
	at
org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:147)
[jackrabbit-core-2.2.8.jar:2.2.8]
	at org.apache.jackrabbit.core.SessionImpl.perform(SessionImpl.java:355)
[jackrabbit-core-2.2.8.jar:2.2.8]
	at org.apache.jackrabbit.core.SessionImpl.save(SessionImpl.java:758)
[jackrabbit-core-2.2.8.jar:2.2.8]
	at org.drools.repository.RulesRepository.save(RulesRepository.java:1405)
[guvnor-repository-5.4.0.Final.jar:5.4.0.Final]
	at
org.drools.guvnor.server.jaxrs.PackageResource.updateAssetBinary(PackageResource.java:791)
[guvnor-webapp-core-5.4.0.Final.jar:5.4.0.Final]
	at sun.reflect.GeneratedMethodAccessor97.invoke(Unknown Source) [:1.7.0_21]
	at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[rt.jar:1.7.0_21]
	at java.lang.reflect.Method.invoke(Method.java:601) [rt.jar:1.7.0_21]
	at
org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:173)
[cxf-rt-core-2.4.4.jar:2.4.4]
	at
org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:89)
[cxf-rt-core-2.4.4.jar:2.4.4]
	at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:164)
[cxf-rt-frontend-jaxrs-2.4.4.jar:2.4.4]
	at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:91)
[cxf-rt-frontend-jaxrs-2.4.4.jar:2.4.4]
	at
org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:58)
[cxf-rt-core-2.4.4.jar:2.4.4]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
[rt.jar:1.7.0_21]
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
[rt.jar:1.7.0_21]
	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
[rt.jar:1.7.0_21]
	at
org.apache.cxf.workqueue.SynchronousExecutor.execute(SynchronousExecutor.java:37)
[cxf-rt-core-2.4.4.jar:2.4.4]
	at
org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:106)
[cxf-rt-core-2.4.4.jar:2.4.4]
	at
org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)
[cxf-api-2.4.4.jar:2.4.4]
	at
org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
[cxf-rt-core-2.4.4.jar:2.4.4]
	at
org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:206)
[cxf-rt-transports-http-2.4.4.jar:2.4.4]
	at
org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:209)
[cxf-rt-transports-http-2.4.4.jar:2.4.4]
	at
org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:152)
[cxf-rt-transports-http-2.4.4.jar:2.4.4]
	at
org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:114)
[cxf-rt-transports-http-2.4.4.jar:2.4.4]
	at
org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:184)
[cxf-rt-transports-http-2.4.4.jar:2.4.4]
	at
org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPut(AbstractHTTPServlet.java:124)
[cxf-rt-transports-http-2.4.4.jar:2.4.4]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:757)
[jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
	at
org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:163)
[cxf-rt-transports-http-2.4.4.jar:2.4.4]
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)
[jbossweb-7.0.13.Final.jar:]
	at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
[jbossweb-7.0.13.Final.jar:]
	at
org.jboss.weld.servlet.ConversationPropagationFilter.doFilter(ConversationPropagationFilter.java:62)
[weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
[jbossweb-7.0.13.Final.jar:]
	at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
[jbossweb-7.0.13.Final.jar:]
	at
org.jboss.solder.servlet.exception.CatchExceptionFilter.doFilter(CatchExceptionFilter.java:65)
[solder-impl-3.1.1.Final.jar:3.1.1.Final]
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
[jbossweb-7.0.13.Final.jar:]
	at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
[jbossweb-7.0.13.Final.jar:]
	at
org.jboss.solder.servlet.event.ServletEventBridgeFilter.doFilter(ServletEventBridgeFilter.java:74)
[solder-impl-3.1.1.Final.jar:3.1.1.Final]
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
[jbossweb-7.0.13.Final.jar:]
	at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
[jbossweb-7.0.13.Final.jar:]
	at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
[jbossweb-7.0.13.Final.jar:]
	at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
[jbossweb-7.0.13.Final.jar:]
	at
org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153)
[jboss-as-web-7.1.1.Final.jar:7.1.1.Final]
	at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)
[jbossweb-7.0.13.Final.jar:]
	at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
[jbossweb-7.0.13.Final.jar:]
	at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
[jbossweb-7.0.13.Final.jar:]
	at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)
[jbossweb-7.0.13.Final.jar:]
	at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
[jbossweb-7.0.13.Final.jar:]
	at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671)
[jbossweb-7.0.13.Final.jar:]
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930)
[jbossweb-7.0.13.Final.jar:]
	at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_21]


Does someone know how guvnor manages JCR sessions, and/or if there is a
potential bug somewhere?

Thanks!

Demian



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