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FS#369 - WebResourceServlet java.util.ConcurrentModificationException
Attached to Project:
LMS
Opened by Guillaume (Guillaume) - Wednesday, 02 May 2012, 15:43 GMT
Last edited by Ferdinand (PaGaisu) - Tuesday, 29 May 2012, 08:38 GMT
Opened by Guillaume (Guillaume) - Wednesday, 02 May 2012, 15:43 GMT
Last edited by Ferdinand (PaGaisu) - Tuesday, 29 May 2012, 08:38 GMT
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DetailsI stopped my LMS, replaced some jar and wars in the webtoolkit project and i got this exception
89930 [http-nio-8080-exec-9] ERROR com.lobeo.lms.http.servlet.ErrorServlet - An error [ConcurrentModificationException] occurred when handling a http request [] (WebResourceServlet,/ws/res/WebToolkit/cfg/preload) java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(Unknown Source) at java.util.HashMap$KeyIterator.next(Unknown Source) at com.lobeo.lms.core.service.impl.ServiceRegistry.getService(ServiceRegistry.java:211) at com.lobeo.lms.core.ContextImpl.getService(ContextImpl.java:450) at com.lobeo.lms.core.ContextImpl.getService(ContextImpl.java:460) at com.lobeo.lms.http.WebResourceServlet.doGet(WebResourceServlet.java:91) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1571) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) |
This task depends upon
2 threads access the registry to get a service and one of them is removing a invalid service from the registry while the other one is looking in the registry