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During load tests, the exception shown below occured two times (with the same font). The setup did simulate 500 concurrent users working on a simplistic RWT application served by Jetty. --- Stacktrace --- Exception in thread "qtp158311540-17" java.lang.IllegalStateException: Font not probed yet: 1|Verdana, "Lucida Sans", Arial, Helvetica, sans-serif|12|0| at org.eclipse.rwt.internal.textsize.TextSizeStorageUtil.checkFontExists(TextSizeStorageUtil.java:56) at org.eclipse.rwt.internal.textsize.TextSizeStorageUtil.store(TextSizeStorageUtil.java:33) at org.eclipse.rwt.internal.textsize.MeasurementOperator.storeTextMeasurement(MeasurementOperator.java:165) at org.eclipse.rwt.internal.textsize.MeasurementOperator.readMeasuredTextSizes(MeasurementOperator.java:134) at org.eclipse.rwt.internal.textsize.MeasurementOperator.handleMeasurementResults(MeasurementOperator.java:52) at org.eclipse.rwt.internal.textsize.MeasurementListener.handleMeasurementResults(MeasurementListener.java:62) at org.eclipse.rwt.internal.textsize.MeasurementListener.afterPhase(MeasurementListener.java:35) at org.eclipse.rwt.internal.lifecycle.PhaseListenerManager.notifyAfterPhase(PhaseListenerManager.java:87) at org.eclipse.rwt.internal.lifecycle.PhaseExecutor.execute(PhaseExecutor.java:35) at org.eclipse.rwt.internal.lifecycle.SimpleLifeCycle.execute(SimpleLifeCycle.java:87) at org.eclipse.rwt.internal.service.LifeCycleServiceHandler.runLifeCycle(LifeCycleServiceHandler.java:79) at org.eclipse.rwt.internal.service.LifeCycleServiceHandler.synchronizedService(LifeCycleServiceHandler.java:58) at org.eclipse.rwt.internal.service.LifeCycleServiceHandler.service(LifeCycleServiceHandler.java:47) at org.eclipse.rwt.internal.service.ServiceManager$HandlerDispatcher.service(ServiceManager.java:35) at org.eclipse.rwt.internal.engine.RWTDelegate.doPost(RWTDelegate.java:46) at javax.servlet.http.HttpServlet.service(HttpServlet.java:755) at javax.servlet.http.HttpServlet.service(HttpServlet.java:848) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:538) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1352) at org.eclipse.rwt.internal.engine.RWTClusterSupport.doFilter(RWTClusterSupport.java:32) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:474) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:934) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:404) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:869) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:247) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:114) at org.eclipse.jetty.server.Server.handle(Server.java:341) at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:589) at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:1065) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:823) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:220) at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:515) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529) at java.lang.Thread.run(Unknown Source)
The MeasurementListener#handleMeasurementResults has been moved from afterPhase to beforePhase in bug 353053. Another bug that could affect the problem is bug 372960. I believe that with both bugs fixed the issue is gone. Please reopen if you get the exception again.
