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I just had a 20 seconds UI Freeze when opening Quick Outline (Cmd+O) in Java Editor. Looking at the stack trace OverrideIndicatorLabelDecorator is waiting in CoreASTProvider.getAST for 20 seconds. !ENTRY org.eclipse.ui.monitoring 4 0 2020-09-21 13:42:32.206 !MESSAGE UI freeze of 20s at 13:42:12.630 !SUBENTRY 1 org.eclipse.ui.monitoring 1 0 2020-09-21 13:42:32.206 !MESSAGE Sample at 13:42:23.953 (+11.323s) Thread 'main' tid=1 (TIMED_WAITING) !STACK 0 Stack Trace at java.base@11.0.6.0.101/java.lang.Object.wait(Native Method) at org.eclipse.jdt.core.manipulation.CoreASTProvider.getAST(CoreASTProvider.java:173) at org.eclipse.jdt.core.manipulation.SharedASTProviderCore.getAST(SharedASTProviderCore.java:138) at org.eclipse.jdt.ui.OverrideIndicatorLabelDecorator.getOverrideIndicators(OverrideIndicatorLabelDecorator.java:161) at org.eclipse.jdt.ui.OverrideIndicatorLabelDecorator.computeAdornmentFlags(OverrideIndicatorLabelDecorator.java:136) at org.eclipse.jdt.ui.OverrideIndicatorLabelDecorator.decorateImage(OverrideIndicatorLabelDecorator.java:110) at org.eclipse.jdt.internal.ui.viewsupport.JavaUILabelProvider.decorateImage(JavaUILabelProvider.java:136) at org.eclipse.jdt.internal.ui.viewsupport.JavaUILabelProvider.getImage(JavaUILabelProvider.java:149) at org.eclipse.jdt.internal.ui.text.JavaOutlineInformationControl$OutlineLabelProvider.getImage(JavaOutlineInformationControl.java:217) at org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.getImage(DelegatingStyledCellLabelProvider.java:198) at org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider.getImage(DecoratingStyledCellLabelProvider.java:171) at org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.update(DelegatingStyledCellLabelProvider.java:124) at org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider.update(DecoratingStyledCellLabelProvider.java:134) at org.eclipse.jface.viewers.ViewerColumn.refresh(ViewerColumn.java:144) at org.eclipse.jface.viewers.AbstractTreeViewer.doUpdateItem(AbstractTreeViewer.java:954) at org.eclipse.jface.viewers.AbstractTreeViewer$UpdateItemSafeRunnable.run(AbstractTreeViewer.java:121) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) at org.eclipse.ui.internal.JFaceUtil$$Lambda$82/0x0000000800232040.run(Unknown Source) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:174) at org.eclipse.jface.viewers.AbstractTreeViewer.doUpdateItem(AbstractTreeViewer.java:1032) at org.eclipse.jface.viewers.StructuredViewer$UpdateItemSafeRunnable.run(StructuredViewer.java:427) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) at org.eclipse.ui.internal.JFaceUtil$$Lambda$82/0x0000000800232040.run(Unknown Source) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:174) at org.eclipse.jface.viewers.StructuredViewer.updateItem(StructuredViewer.java:2111) at org.eclipse.jface.viewers.AbstractTreeViewer.createTreeItem(AbstractTreeViewer.java:848) at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:826) at org.eclipse.jface.viewers.TreeViewer.createChildren(TreeViewer.java:604) at org.eclipse.jface.viewers.AbstractTreeViewer.internalExpandToLevel(AbstractTreeViewer.java:1804) at org.eclipse.jdt.internal.ui.text.JavaOutlineInformationControl$OutlineTreeViewer.internalExpandToLevel(JavaOutlineInformationControl.java:261) at org.eclipse.jface.viewers.AbstractTreeViewer.internalExpandToLevel(AbstractTreeViewer.java:1814) at org.eclipse.jdt.internal.ui.text.JavaOutlineInformationControl$OutlineTreeViewer.internalExpandToLevel(JavaOutlineInformationControl.java:261) at org.eclipse.jface.viewers.AbstractTreeViewer.internalInitializeTree(AbstractTreeViewer.java:1595) at org.eclipse.jface.viewers.TreeViewer.internalInitializeTree(TreeViewer.java:780) at org.eclipse.jface.viewers.AbstractTreeViewer.lambda$1(AbstractTreeViewer.java:1579) at org.eclipse.jface.viewers.AbstractTreeViewer$$Lambda$431/0x0000000800736440.run(Unknown Source) at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1400) at org.eclipse.jface.viewers.TreeViewer.preservingSelection(TreeViewer.java:363) at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1361) at org.eclipse.jface.viewers.AbstractTreeViewer.inputChanged(AbstractTreeViewer.java:1573) at org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:282) at org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:1634) at org.eclipse.jdt.internal.ui.text.AbstractInformationControl.inputChanged(AbstractInformationControl.java:623) at org.eclipse.jdt.internal.ui.text.JavaOutlineInformationControl.setInput(JavaOutlineInformationControl.java:653) at org.eclipse.jface.text.AbstractInformationControlManager.internalShowInformationControl(AbstractInformationControlManager.java:1151) at org.eclipse.jface.text.AbstractInformationControlManager.presentInformation(AbstractInformationControlManager.java:1120) at org.eclipse.jface.text.AbstractInformationControlManager.setInformation(AbstractInformationControlManager.java:431) at org.eclipse.jface.text.information.InformationPresenter.computeInformation(InformationPresenter.java:321) at org.eclipse.jface.text.AbstractInformationControlManager.doShowInformation(AbstractInformationControlManager.java:1101) at org.eclipse.jface.text.AbstractInformationControlManager.showInformation(AbstractInformationControlManager.java:1091) at org.eclipse.jdt.internal.ui.javaeditor.JavaSourceViewer.doOperation(JavaSourceViewer.java:187) at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor$AdaptedSourceViewer.doOperation(CompilationUnitEditor.java:206) at org.eclipse.ui.texteditor.TextOperationAction.lambda$0(TextOperationAction.java:130) at org.eclipse.ui.texteditor.TextOperationAction$$Lambda$1138/0x0000000800eb5c40.run(Unknown Source) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:72) at org.eclipse.ui.texteditor.TextOperationAction.run(TextOperationAction.java:130) at org.eclipse.jface.action.Action.runWithEvent(Action.java:474) at org.eclipse.jface.commands.ActionHandler.execute(ActionHandler.java:121) at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:97) at jdk.internal.reflect.GeneratedMethodAccessor62.invoke(Unknown Source) at java.base@11.0.6.0.101/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base@11.0.6.0.101/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:58) at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:319) at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:253) at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:173) at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:156) at org.eclipse.core.commands.Command.executeWithChecks(Command.java:488) at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:487) at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:213) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.executeCommand(KeyBindingDispatcher.java:308) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.press(KeyBindingDispatcher.java:584) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.processKeyEvent(KeyBindingDispatcher.java:653) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.filterKeySequenceBindings(KeyBindingDispatcher.java:443) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.access$2(KeyBindingDispatcher.java:386) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher$KeyDownFilter.handleEvent(KeyBindingDispatcher.java:96) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1111) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4380) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1512) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1535) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1520) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1549) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1545) at org.eclipse.swt.widgets.Canvas.sendKeyEvent(Canvas.java:522) at org.eclipse.swt.widgets.Control.doCommandBySelector(Control.java:1081) at org.eclipse.swt.widgets.Display.windowProc(Display.java:6184) at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method) at org.eclipse.swt.internal.cocoa.NSResponder.interpretKeyEvents(NSResponder.java:59) at org.eclipse.swt.widgets.Composite.keyDown(Composite.java:606) at org.eclipse.swt.widgets.Display.windowProc(Display.java:6016) at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method) at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:235) at org.eclipse.swt.widgets.Widget.windowSendEvent(Widget.java:2150) at org.eclipse.swt.widgets.Shell.windowSendEvent(Shell.java:2401) at org.eclipse.swt.widgets.Display.windowProc(Display.java:6136) at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method) at org.eclipse.swt.widgets.Display.applicationSendEvent(Display.java:5386) at org.eclipse.swt.widgets.Display.applicationProc(Display.java:5522) at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method) at org.eclipse.swt.internal.cocoa.NSApplication.sendEvent(NSApplication.java:117) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3786) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1158) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1047) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:658) at org.eclipse.ui.internal.Workbench$$Lambda$99/0x0000000800265040.run(Unknown Source) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:557) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:154) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base@11.0.6.0.101/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base@11.0.6.0.101/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base@11.0.6.0.101/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base@11.0.6.0.101/java.lang.reflect.Method.invoke(Method.java:566) at app//org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at app//org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at app//org.eclipse.equinox.launcher.Main.run(Main.java:1447)
Created attachment 284204 [details] full log stack trace details
Taking a quick look, it's likely happening at 'fWaitLock.wait(30000);' and appears to be related to https://bugs.eclipse.org/bugs/show_bug.cgi?id=366048#c21 .
*** Bug 568545 has been marked as a duplicate of this bug. ***
This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet. If you have further information on the current state of the bug, please add it. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant. -- The automated Eclipse Genie.
