Bug 539266

Summary: Deadlock on startup of eclipse photon june 2018 version
Product: [Eclipse Project] JDT Reporter: Tobias Melcher <tobias.melcher>
Component: CoreAssignee: JDT-Core-Inbox <jdt-core-inbox>
Status: NEW --- QA Contact:
Severity: normal    
Priority: P3 CC: christian.dietrich.opensource, jarthana, karsten.thoms, loskutov, sebastian.zarnekow
Version: 4.8   
Target Milestone: ---   
Hardware: PC   
OS: Windows 10   
Whiteboard: stalebug
Attachments:
Description Flags
thread dump of deadlock none

Description Tobias Melcher CLA 2018-09-20 03:50:25 EDT
Created attachment 275903 [details]
thread dump of deadlock

Hi eclipse colleagues,

I just ran into a deadlock issue after starting my eclipse photon IDE containing 17 pde projects. Please find attached the thread dump. Could you please take a look and maybe provide a fix?

Thanks a lot,
Tobias



Eclipse SDK
Version: Photon (4.8)
Build id: I20180524-0900
OS: Windows 10, v.10.0, x86_64 / win32
Java version: 1.8.0_162
Comment 1 Jay Arthanareeswaran CLA 2018-09-20 04:58:57 EDT
I see Xtext may have a role here.

Can you check if you there was a change in the Xtext version as well when you changed Eclipse version?
Comment 2 Tobias Melcher CLA 2018-09-20 07:14:50 EDT
(In reply to Jay Arthanareeswaran from comment #1)
> I see Xtext may have a role here.
> 
> Can you check if you there was a change in the Xtext version as well when
> you changed Eclipse version?

I did not trigger any updates. I simply started the IDE this morning and ran then into the deadlock. Xtext was already installed.
Comment 3 Andrey Loskutov CLA 2018-09-21 04:28:26 EDT
*Which* XText version are you using?
Comment 4 Tobias Melcher CLA 2018-09-21 05:22:07 EDT
(In reply to Andrey Loskutov from comment #3)
> *Which* XText version are you using?

Xtext
Version: 2.14.0.v20180523-0937
Build id: I20180522-1821
Comment 5 Andrey Loskutov CLA 2018-09-21 09:51:30 EDT
I have not the XText sources right now, but the threads below seem to have a deadlock, and the bad part is probably coming from https://marketplace.eclipse.org/content/eclipse-runner plugin. Please uninstall it and check if you can work without deadlocks.


"Thread-6" #51 prio=5 os_prio=0 cpu=4531.25 [reset 4531.25] ms elapsed=398.82 [reset 398.82] s allocated=613886248 B (585.45 MB) [reset 613886248 B (585.45 MB)] defined_classes=1480
io= file i/o: 9921102/0 B, net i/o: 0/0 B, files opened:24, socks opened:0  [reset file i/o: 9921102/0 B, net i/o: 0/0 B, files opened:24, socks opened:0 ] 
tid=0x000000002d8e6000 nid=0x4224 / 16932 waiting on condition  [_thread_blocked (_at_safepoint), stack(0x0000000037190000,0x0000000037290000)] [0x000000003728e000]
   java.lang.Thread.State: TIMED_WAITING (parking)
	at jdk.internal.misc.Unsafe.park(ZJ)V(Native Method)
	- parking to wait for  <0x0000000700aa1e08> (a java.util.concurrent.Semaphore$NonfairSync)
	at sun.misc.Unsafe.park(ZJ)V(Unsafe.java:1079)
	at java.util.concurrent.locks.LockSupport.parkNanos(Ljava/lang/Object;J)V(LockSupport.java:215)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(IJ)Z(AbstractQueuedSynchronizer.java:1037)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(IJ)Z(AbstractQueuedSynchronizer.java:1328)
	at java.util.concurrent.Semaphore.tryAcquire(JLjava/util/concurrent/TimeUnit;)Z(Semaphore.java:409)
	at org.eclipse.ui.internal.PendingSyncExec.acquire(J)Z(PendingSyncExec.java:35)
	at org.eclipse.ui.internal.PendingSyncExec.waitUntilExecuted(Lorg/eclipse/ui/internal/UILockListener;)V(PendingSyncExec.java:78)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(Ljava/lang/Runnable;)V(UISynchronizer.java:153)
	at org.eclipse.swt.widgets.Display.syncExec(Ljava/lang/Runnable;)V(Display.java:4567)
	at com.eclipserunner.views.impl.RunnerView.refresh()V(RunnerView.java:554)
	at com.eclipserunner.views.impl.RunnerView$3.resourceChanged(Lorg/eclipse/core/resources/IResourceChangeEvent;)V(RunnerView.java:199)
	at org.eclipse.core.internal.events.NotificationManager$1.run()V(NotificationManager.java:297)
	at org.eclipse.core.runtime.SafeRunner.run(Lorg/eclipse/core/runtime/ISafeRunnable;)V(SafeRunner.java:42)
	at org.eclipse.core.internal.events.NotificationManager.notify([Lorg/eclipse/core/internal/events/ResourceChangeListenerList$ListenerEntry;Lorg/eclipse/core/internal/events/ResourceChangeEvent;Z)V(NotificationManager.java:287)
	at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(Lorg/eclipse/core/internal/watson/ElementTree;Lorg/eclipse/core/internal/events/ResourceChangeEvent;Z)V(NotificationManager.java:150)
	at org.eclipse.core.internal.resources.Workspace.broadcastPostChange()V(Workspace.java:376)
	at org.eclipse.core.internal.resources.Workspace.endOperation(Lorg/eclipse/core/runtime/jobs/ISchedulingRule;Z)V(Workspace.java:1499)
	at org.eclipse.core.internal.resources.Workspace.run(Lorg/eclipse/core/runtime/ICoreRunnable;Lorg/eclipse/core/runtime/jobs/ISchedulingRule;ILorg/eclipse/core/runtime/IProgressMonitor;)V(Workspace.java:2302)
	at org.eclipse.core.internal.resources.Workspace.run(Lorg/eclipse/core/resources/IWorkspaceRunnable;Lorg/eclipse/core/runtime/jobs/ISchedulingRule;ILorg/eclipse/core/runtime/IProgressMonitor;)V(Workspace.java:2316)
	at org.eclipse.xtext.ui.resource.Storage2UriMapperJavaImpl.doInitializeCache()V(Storage2UriMapperJavaImpl.java:667)
	at org.eclipse.xtext.ui.resource.Storage2UriMapperJavaImpl.access$2(Lorg/eclipse/xtext/ui/resource/Storage2UriMapperJavaImpl;)V(Storage2UriMapperJavaImpl.java:646)
	at org.eclipse.xtext.ui.resource.Storage2UriMapperJavaImpl$3.run()V(Storage2UriMapperJavaImpl.java:635)
	at java.lang.Thread.run()V(Thread.java:836)


"main" #1 prio=6 os_prio=0 cpu=23109.38 [reset 23109.38] ms elapsed=423.45 [reset 423.45] s allocated=955134424 B (910.89 MB) [reset 955134424 B (910.89 MB)] defined_classes=11810
io= file i/o: 43517696/174060 B, net i/o: 0/0 B, files opened:500, socks opened:0  [reset file i/o: 43517696/174060 B, net i/o: 0/0 B, files opened:500, socks opened:0 ] 
tid=0x0000000002e16000 nid=0x35a0 / 13728 waiting on condition  [_thread_blocked (_at_safepoint), stack(0x0000000000800000,0x0000000000900000)] [0x00000000008f8000]
   java.lang.Thread.State: WAITING (parking)
	at jdk.internal.misc.Unsafe.park(ZJ)V(Native Method)
	- parking to wait for  <0x00000006f6d47e78> (a java.util.concurrent.CountDownLatch$Sync)
	at sun.misc.Unsafe.park(ZJ)V(Unsafe.java:1079)
	at java.util.concurrent.locks.LockSupport.park(Ljava/lang/Object;)V(LockSupport.java:175)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt()Z(AbstractQueuedSynchronizer.java:836)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(I)V(AbstractQueuedSynchronizer.java:997)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(I)V(AbstractQueuedSynchronizer.java:1304)
	at java.util.concurrent.CountDownLatch.await()V(CountDownLatch.java:231)
	at org.eclipse.xtext.ui.resource.Storage2UriMapperJavaImpl.useNewThreadToInitialize(Z)V(Storage2UriMapperJavaImpl.java:623)
	at org.eclipse.xtext.ui.resource.Storage2UriMapperJavaImpl.initializeCache(Z)V(Storage2UriMapperJavaImpl.java:588)
	at org.eclipse.xtext.ui.resource.Storage2UriMapperJavaImpl.elementChanged(Lorg/eclipse/jdt/core/ElementChangedEvent;)V(Storage2UriMapperJavaImpl.java:420)
	at org.eclipse.jdt.internal.core.DeltaProcessor$3.run()V(DeltaProcessor.java:1735)
	at org.eclipse.core.runtime.SafeRunner.run(Lorg/eclipse/core/runtime/ISafeRunnable;)V(SafeRunner.java:42)
	at org.eclipse.jdt.internal.core.DeltaProcessor.notifyListeners(Lorg/eclipse/jdt/core/IJavaElementDelta;I[Lorg/eclipse/jdt/core/IElementChangedListener;[II)V(DeltaProcessor.java:1723)
	at org.eclipse.jdt.internal.core.DeltaProcessor.firePostChangeDelta(Lorg/eclipse/jdt/core/IJavaElementDelta;[Lorg/eclipse/jdt/core/IElementChangedListener;[II)V(DeltaProcessor.java:1556)
	at org.eclipse.jdt.internal.core.DeltaProcessor.fire(Lorg/eclipse/jdt/core/IJavaElementDelta;I)V(DeltaProcessor.java:1532)
	at org.eclipse.jdt.internal.core.JavaModelOperation.run(Lorg/eclipse/core/runtime/IProgressMonitor;)V(JavaModelOperation.java:774)
	at org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(Lorg/eclipse/core/runtime/IProgressMonitor;)V(JavaModelOperation.java:799)
	at org.eclipse.jdt.internal.core.CompilationUnit.becomeWorkingCopy(Lorg/eclipse/jdt/core/IProblemRequestor;Lorg/eclipse/core/runtime/IProgressMonitor;)V(CompilationUnit.java:96)
	at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitDocumentProvider.createFileInfo(Ljava/lang/Object;)Lorg/eclipse/ui/editors/text/TextFileDocumentProvider$FileInfo;(CompilationUnitDocumentProvider.java:1031)
	at org.eclipse.ui.editors.text.TextFileDocumentProvider.connect(Ljava/lang/Object;)V(TextFileDocumentProvider.java:478)
	at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitDocumentProvider.connect(Ljava/lang/Object;)V(CompilationUnitDocumentProvider.java:1274)
	at org.eclipse.ui.texteditor.AbstractTextEditor.doSetInput(Lorg/eclipse/ui/IEditorInput;)V(AbstractTextEditor.java:4203)
	at org.eclipse.ui.texteditor.StatusTextEditor.doSetInput(Lorg/eclipse/ui/IEditorInput;)V(StatusTextEditor.java:257)
	at org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.doSetInput(Lorg/eclipse/ui/IEditorInput;)V(AbstractDecoratedTextEditor.java:1473)
	at org.eclipse.jdt.internal.ui.javaeditor.JavaEditor.internalDoSetInput(Lorg/eclipse/ui/IEditorInput;)V(JavaEditor.java:2570)
	at org.eclipse.jdt.internal.ui.javaeditor.JavaEditor.doSetInput(Lorg/eclipse/ui/IEditorInput;)V(JavaEditor.java:2543)
	at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor.doSetInput(Lorg/eclipse/ui/IEditorInput;)V(CompilationUnitEditor.java:1420)
	at org.eclipse.ui.texteditor.AbstractTextEditor$5.run(Lorg/eclipse/core/runtime/IProgressMonitor;)V(AbstractTextEditor.java:3165)
	at org.eclipse.jface.operation.ModalContext.runInCurrentThread(Lorg/eclipse/jface/operation/IRunnableWithProgress;Lorg/eclipse/core/runtime/IProgressMonitor;)V(ModalContext.java:437)
	at org.eclipse.jface.operation.ModalContext.run(Lorg/eclipse/jface/operation/IRunnableWithProgress;ZLorg/eclipse/core/runtime/IProgressMonitor;Lorg/eclipse/swt/widgets/Display;)V(ModalContext.java:353)
	at org.eclipse.ui.internal.WorkbenchWindow$14.run()V(WorkbenchWindow.java:2212)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(Lorg/eclipse/swt/widgets/Display;Ljava/lang/Runnable;)V(BusyIndicator.java:71)
	at org.eclipse.ui.internal.WorkbenchWindow.run(ZZLorg/eclipse/jface/operation/IRunnableWithProgress;)V(WorkbenchWindow.java:2208)
	at org.eclipse.ui.texteditor.AbstractTextEditor.internalInit(Lorg/eclipse/ui/IWorkbenchWindow;Lorg/eclipse/ui/IEditorSite;Lorg/eclipse/ui/IEditorInput;)V(AbstractTextEditor.java:3183)
	at org.eclipse.ui.texteditor.AbstractTextEditor.init(Lorg/eclipse/ui/IEditorSite;Lorg/eclipse/ui/IEditorInput;)V(AbstractTextEditor.java:3208)
	at org.eclipse.ui.internal.EditorReference.initialize(Lorg/eclipse/ui/IWorkbenchPart;)V(EditorReference.java:362)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create()V(CompatibilityPart.java:342)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(Method.java:498)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute()Ljava/lang/Object;(MethodRequestor.java:55)
	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(Ljava/lang/Class;Ljava/lang/Object;Ljava/lang/Class;Lorg/eclipse/e4/core/di/suppliers/PrimaryObjectSupplier;Lorg/eclipse/e4/core/di/suppliers/PrimaryObjectSupplier;Ljava/util/ArrayList;)V(InjectorImpl.java:1005)
	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(Ljava/lang/Class;Ljava/lang/Object;Ljava/lang/Class;Lorg/eclipse/e4/core/di/suppliers/PrimaryObjectSupplier;Lorg/eclipse/e4/core/di/suppliers/PrimaryObjectSupplier;Ljava/util/ArrayList;)V(InjectorImpl.java:970)
	at org.eclipse.e4.core.internal.di.InjectorImpl.internalInject(Ljava/lang/Object;Lorg/eclipse/e4/core/di/suppliers/PrimaryObjectSupplier;Lorg/eclipse/e4/core/di/suppliers/PrimaryObjectSupplier;)V(InjectorImpl.java:137)
	at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(Ljava/lang/Class;Lorg/eclipse/e4/core/di/suppliers/PrimaryObjectSupplier;Lorg/eclipse/e4/core/di/suppliers/PrimaryObjectSupplier;)Ljava/lang/Object;(InjectorImpl.java:412)
	at org.eclipse.e4.core.internal.di.InjectorImpl.make(Ljava/lang/Class;Lorg/eclipse/e4/core/di/suppliers/PrimaryObjectSupplier;)Ljava/lang/Object;(InjectorImpl.java:331)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(Ljava/lang/Class;Lorg/eclipse/e4/core/contexts/IEclipseContext;)Ljava/lang/Object;(ContextInjectionFactory.java:190)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(Lorg/osgi/framework/Bundle;Lorg/eclipse/e4/core/contexts/IEclipseContext;Lorg/eclipse/e4/core/contexts/IEclipseContext;Lorg/eclipse/emf/common/util/URI;)Ljava/lang/Object;(ReflectionContributionFactory.java:105)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(Ljava/lang/String;Lorg/eclipse/e4/core/contexts/IEclipseContext;Lorg/eclipse/e4/core/contexts/IEclipseContext;)Ljava/lang/Object;(ReflectionContributionFactory.java:74)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(Ljava/lang/String;Lorg/eclipse/e4/core/contexts/IEclipseContext;)Ljava/lang/Object;(ReflectionContributionFactory.java:56)
	at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(Lorg/eclipse/e4/ui/model/application/ui/MUIElement;Ljava/lang/Object;)Ljava/lang/Object;(ContributedPartRenderer.java:129)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(Lorg/eclipse/e4/ui/model/application/ui/MUIElement;Ljava/lang/Object;)Ljava/lang/Object;(PartRenderingEngine.java:1012)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(Lorg/eclipse/e4/ui/model/application/ui/MUIElement;Ljava/lang/Object;Lorg/eclipse/e4/core/contexts/IEclipseContext;)Ljava/lang/Object;(PartRenderingEngine.java:672)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(Lorg/eclipse/e4/ui/model/application/ui/MUIElement;)Ljava/lang/Object;(PartRenderingEngine.java:778)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$0(Lorg/eclipse/e4/ui/internal/workbench/swt/PartRenderingEngine;Lorg/eclipse/e4/ui/model/application/ui/MUIElement;)Ljava/lang/Object;(PartRenderingEngine.java:749)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run()V(PartRenderingEngine.java:743)
	at org.eclipse.core.runtime.SafeRunner.run(Lorg/eclipse/core/runtime/ISafeRunnable;)V(SafeRunner.java:42)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(Lorg/eclipse/e4/ui/model/application/ui/MUIElement;)Ljava/lang/Object;(PartRenderingEngine.java:727)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.createElement(Lorg/eclipse/e4/ui/model/application/ui/MUIElement;)V(PartServiceImpl.java:1281)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(Lorg/eclipse/e4/ui/model/application/ui/basic/MPart;Lorg/eclipse/e4/ui/workbench/modeling/EPartService$PartState;)Lorg/eclipse/e4/ui/model/application/ui/basic/MPart;(PartServiceImpl.java:1242)
	at org.eclipse.ui.internal.WorkbenchPartReference.getPart(Z)Lorg/eclipse/ui/IWorkbenchPart;(WorkbenchPartReference.java:393)
	at org.eclipse.ui.internal.EditorReference.getEditor(Z)Lorg/eclipse/ui/IEditorPart;(EditorReference.java:290)
	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Lorg/eclipse/ui/IEditorInput;Ljava/lang/String;ZILorg/eclipse/ui/IMemento;Z)Lorg/eclipse/ui/IEditorPart;(WorkbenchPage.java:3229)
	at org.eclipse.ui.internal.WorkbenchPage.access$26(Lorg/eclipse/ui/internal/WorkbenchPage;Lorg/eclipse/ui/IEditorInput;Ljava/lang/String;ZILorg/eclipse/ui/IMemento;Z)Lorg/eclipse/ui/IEditorPart;(WorkbenchPage.java:3192)
	at org.eclipse.ui.internal.WorkbenchPage$10.run()V(WorkbenchPage.java:3174)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(Lorg/eclipse/swt/widgets/Display;Ljava/lang/Runnable;)V(BusyIndicator.java:71)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(Lorg/eclipse/ui/IEditorInput;Ljava/lang/String;ZILorg/eclipse/ui/IMemento;Z)Lorg/eclipse/ui/IEditorPart;(WorkbenchPage.java:3169)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(Lorg/eclipse/ui/IEditorInput;Ljava/lang/String;ZI)Lorg/eclipse/ui/IEditorPart;(WorkbenchPage.java:3133)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(Lorg/eclipse/ui/IEditorInput;Ljava/lang/String;Z)Lorg/eclipse/ui/IEditorPart;(WorkbenchPage.java:3123)
	at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(Lorg/eclipse/ui/IEditorInput;Ljava/lang/String;Z)Lorg/eclipse/ui/IEditorPart;(EditorUtility.java:373)
	at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(Ljava/lang/Object;Z)Lorg/eclipse/ui/IEditorPart;(EditorUtility.java:179)
	at org.eclipse.jdt.ui.actions.OpenAction.run([Ljava/lang/Object;)V(OpenAction.java:284)
	at org.eclipse.jdt.ui.actions.OpenAction.run(Lorg/eclipse/jface/text/ITextSelection;)V(OpenAction.java:176)
	at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(Lorg/eclipse/jface/viewers/ISelection;)V(SelectionDispatchAction.java:275)
	at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run()V(SelectionDispatchAction.java:249)
	at org.eclipse.jface.action.Action.runWithEvent(Lorg/eclipse/swt/widgets/Event;)V(Action.java:473)
Comment 6 Eclipse Genie CLA 2020-09-28 12:45:03 EDT
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.
Comment 7 Eclipse Genie CLA 2022-10-06 15:41:38 EDT
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.