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Hi, in my Java interface I used the pop-up menu "Open Implementation" from the Java source editor (CTRL+LMB). Then I had to wait and wait and wait... I had to kill the Eclipse process. I checked the log file and it looked like a deadlock in the JDT. But the log file is not the crash, because Eclipse did not log anything durning the deadlock. The part from the log file below is from using it yesterday when it hangs but recovers. !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'Worker-138' tid=434 (WAITING) Waiting for: java.util.concurrent.locks.ReentrantLock$FairSync@2556e0ba lock owner='Worker-140' tid=436 !STACK 0 Stack Trace at sun.misc.Unsafe.park(Native Method) at java.util.concurrent.locks.LockSupport.park(Unknown Source) at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(Unknown Source) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(Unknown Source) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(Unknown Source) at java.util.concurrent.locks.ReentrantLock$FairSync.lock(Unknown Source) at java.util.concurrent.locks.ReentrantLock.lock(Unknown Source) at org.eclipse.egit.core.internal.indexdiff.IndexDiffCacheEntry$4.run(IndexDiffCacheEntry.java:392) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56) !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'org.eclipse.jdt.internal.ui.text.JavaReconciler' tid=323 (TIMED_WAITING) Waiting for: org.eclipse.jface.text.reconciler.DirtyRegionQueue@60f3b289 !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at org.eclipse.jface.text.reconciler.AbstractReconciler$BackgroundThread.run(AbstractReconciler.java:180) !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'org.eclipse.jdt.internal.ui.text.JavaReconciler' tid=248 (TIMED_WAITING) Waiting for: org.eclipse.jface.text.reconciler.DirtyRegionQueue@417a81cd !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at org.eclipse.jface.text.reconciler.AbstractReconciler$BackgroundThread.run(AbstractReconciler.java:180) !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'org.eclipse.wst.sse.ui.internal.reconcile.StructuredRegionProcessor' tid=239 (TIMED_WAITING) Waiting for: java.util.Collections$SynchronizedRandomAccessList@39f0e2af !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at org.eclipse.wst.sse.ui.internal.reconcile.DirtyRegionProcessor$BackgroundThread.run(DirtyRegionProcessor.java:667) !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'org.eclipse.wst.sse.ui.internal.reconcile.StructuredRegionProcessor' tid=237 (TIMED_WAITING) Waiting for: java.util.Collections$SynchronizedRandomAccessList@1f68cb64 !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at org.eclipse.wst.sse.ui.internal.reconcile.DirtyRegionProcessor$BackgroundThread.run(DirtyRegionProcessor.java:667) !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'org.eclipse.jdt.internal.ui.text.JavaReconciler' tid=217 (TIMED_WAITING) Waiting for: org.eclipse.jface.text.reconciler.DirtyRegionQueue@688e7f81 !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at org.eclipse.jface.text.reconciler.AbstractReconciler$BackgroundThread.run(AbstractReconciler.java:180) !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'org.eclipse.jdt.internal.ui.text.JavaReconciler' tid=204 (TIMED_WAITING) Waiting for: org.eclipse.jface.text.reconciler.DirtyRegionQueue@7defefb4 !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at org.eclipse.jface.text.reconciler.AbstractReconciler$BackgroundThread.run(AbstractReconciler.java:180) !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'Worker-121' tid=175 (TIMED_WAITING) !STACK 0 Stack Trace at java.lang.Thread.sleep(Native Method) at org.eclipse.ui.internal.decorators.DecorationScheduler$1.run(DecorationScheduler.java:289) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56) !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'com.google.inject.internal.util.$Finalizer' tid=94 (WAITING) Waiting for: java.lang.ref.ReferenceQueue$Lock@1ade5fc5 !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at java.lang.ref.ReferenceQueue.remove(Unknown Source) at java.lang.ref.ReferenceQueue.remove(Unknown Source) at com.google.inject.internal.util.$Finalizer.run(Finalizer.java:114) !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'DLTK indexing' tid=86 (WAITING) Waiting for: org.eclipse.dltk.core.search.indexing.IndexManager@01b74968 !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at java.lang.Object.wait(Unknown Source) at org.eclipse.dltk.internal.core.search.processing.JobManager.run(JobManager.java:460) at java.lang.Thread.run(Unknown Source) !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'Thread-6' tid=52 (TIMED_WAITING) !STACK 0 Stack Trace at java.lang.Thread.sleep(Native Method) at org.eclipse.equinox.internal.p2.updatechecker.UpdateChecker$UpdateCheckThread.run(UpdateChecker.java:86) !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'Thread-4' tid=37 (TIMED_WAITING) !STACK 0 Stack Trace at java.lang.Thread.sleep(Native Method) at org.eclipse.linuxtools.internal.docker.core.DockerContainerRefreshManager$ContainerRefreshThread.run(DockerContainerRefreshManager.java:151) !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'Java indexing' tid=35 (WAITING) Waiting for: org.eclipse.jdt.internal.core.search.indexing.IndexManager@640da682 !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at java.lang.Object.wait(Unknown Source) at org.eclipse.jdt.internal.core.search.processing.JobManager.run(JobManager.java:373) at java.lang.Thread.run(Unknown Source) !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'EMF Reference Cleaner' tid=28 (WAITING) Waiting for: java.lang.ref.ReferenceQueue$Lock@37820958 !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at java.lang.ref.ReferenceQueue.remove(Unknown Source) at java.lang.ref.ReferenceQueue.remove(Unknown Source) at org.eclipse.emf.common.util.CommonUtil$1ReferenceClearingQueuePollingThread.run(CommonUtil.java:70) !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'Worker-JM' tid=27 (WAITING) Waiting for: java.util.ArrayList@083fb1a1 !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at org.eclipse.core.internal.jobs.InternalWorker.run(InternalWorker.java:59) !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'SCR Component Actor' tid=25 (WAITING) Waiting for: java.util.LinkedList@22046277 !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at java.lang.Object.wait(Unknown Source) at org.apache.felix.scr.impl.ComponentActorThread.run(ComponentActorThread.java:80) at java.lang.Thread.run(Unknown Source) !SUBENTRY 2 org.eclipse.ui.monitoring 1 0 2017-07-20 09:08:10.820 !MESSAGE Thread 'Worker-140' tid=436 (BLOCKED) Waiting for: org.eclipse.jgit.internal.storage.file.PackFile@53bb8c2a lock owner='main' tid=1 Holding: java.util.concurrent.locks.ReentrantLock$FairSync@2556e0ba !STACK 0 Stack Trace at org.eclipse.jgit.internal.storage.file.PackFile.idx(PackFile.java:178) at org.eclipse.jgit.internal.storage.file.PackFile.get(PackFile.java:274) at org.eclipse.jgit.internal.storage.file.ObjectDirectory.openPackedObject(ObjectDirectory.java:471) at org.eclipse.jgit.internal.storage.file.ObjectDirectory.openPackedFromSelfOrAlternate(ObjectDirectory.java:429) at org.eclipse.jgit.internal.storage.file.ObjectDirectory.openObject(ObjectDirectory.java:420) at org.eclipse.jgit.internal.storage.file.WindowCursor.open(WindowCursor.java:159) at org.eclipse.jgit.lib.ObjectReader.open(ObjectReader.java:234) at org.eclipse.jgit.revwalk.RevWalk.parseAny(RevWalk.java:859) at org.eclipse.jgit.revwalk.RevWalk.parseTree(RevWalk.java:799) at org.eclipse.jgit.lib.IndexDiff.<init>(IndexDiff.java:315) at org.eclipse.jgit.lib.IndexDiff.<init>(IndexDiff.java:297) at org.eclipse.egit.core.internal.indexdiff.IndexDiffCacheEntry.calcIndexDiffDataFull(IndexDiffCacheEntry.java:664) at org.eclipse.egit.core.internal.indexdiff.IndexDiffCacheEntry.access$8(IndexDiffCacheEntry.java:653) at org.eclipse.egit.core.internal.indexdiff.IndexDiffCacheEntry$4.run(IndexDiffCacheEntry.java:403) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56) !ENTRY org.eclipse.ui.monitoring 2 0 2017-07-20 10:12:17.621 !MESSAGE UI freeze of 0,59s at 10:12:17.032 !SUBENTRY 1 org.eclipse.ui.monitoring 1 0 2017-07-20 10:12:17.621 !MESSAGE Sample at 10:12:17.374 (+0,342s) Thread 'main' tid=1 (TIMED_WAITING) !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at org.eclipse.jdt.internal.ui.javaeditor.ASTProvider.getAST(ASTProvider.java:458) at org.eclipse.jdt.ui.SharedASTProvider.getAST(SharedASTProvider.java:128) at org.eclipse.jdt.internal.ui.text.correction.AssistContext.getASTRoot(AssistContext.java:125) at org.eclipse.jdt.internal.ui.text.java.hover.ProblemHover$ProblemInfo.getJavaAnnotationFixes(ProblemHover.java:98) at org.eclipse.jdt.internal.ui.text.java.hover.ProblemHover$ProblemInfo.getCompletionProposals(ProblemHover.java:76) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.deferredCreateContent(AbstractAnnotationHover.java:301) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.setInput(AbstractAnnotationHover.java:188) at org.eclipse.jface.text.AbstractInformationControlManager.internalShowInformationControl(AbstractInformationControlManager.java:1192) at org.eclipse.jface.text.AbstractInformationControlManager.presentInformation(AbstractInformationControlManager.java:1161) at org.eclipse.jface.text.AbstractHoverInformationControlManager.presentInformation(AbstractHoverInformationControlManager.java:894) at org.eclipse.jface.text.TextViewerHoverManager.doPresentInformation(TextViewerHoverManager.java:247) at org.eclipse.jface.text.TextViewerHoverManager$5.run(TextViewerHoverManager.java:237) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:37) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4213) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3820) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1044) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:680) at org.eclipse.ui.internal.Workbench$$Lambda$14/859456754.run(Unknown Source) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:151) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590) at org.eclipse.equinox.launcher.Main.run(Main.java:1499) !ENTRY org.eclipse.ui.monitoring 2 0 2017-07-20 10:43:42.585 !MESSAGE UI freeze of 0,83s at 10:43:41.759 !SUBENTRY 1 org.eclipse.ui.monitoring 1 0 2017-07-20 10:43:42.585 !MESSAGE Sample at 10:43:42.093 (+0,334s) Thread 'main' tid=1 (TIMED_WAITING) !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at org.eclipse.jdt.internal.ui.javaeditor.ASTProvider.getAST(ASTProvider.java:458) at org.eclipse.jdt.ui.SharedASTProvider.getAST(SharedASTProvider.java:128) at org.eclipse.jdt.internal.ui.text.correction.AssistContext.getASTRoot(AssistContext.java:125) at org.eclipse.jdt.internal.ui.text.java.hover.ProblemHover$ProblemInfo.getJavaAnnotationFixes(ProblemHover.java:98) at org.eclipse.jdt.internal.ui.text.java.hover.ProblemHover$ProblemInfo.getCompletionProposals(ProblemHover.java:76) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.deferredCreateContent(AbstractAnnotationHover.java:301) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.setInput(AbstractAnnotationHover.java:188) at org.eclipse.jface.text.AbstractInformationControlManager.internalShowInformationControl(AbstractInformationControlManager.java:1192) at org.eclipse.jface.text.AbstractInformationControlManager.presentInformation(AbstractInformationControlManager.java:1161) at org.eclipse.jface.text.AbstractHoverInformationControlManager.presentInformation(AbstractHoverInformationControlManager.java:894) at org.eclipse.jface.text.TextViewerHoverManager.doPresentInformation(TextViewerHoverManager.java:247) at org.eclipse.jface.text.TextViewerHoverManager$5.run(TextViewerHoverManager.java:237) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:37) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4213) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3820) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1044) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:680) at org.eclipse.ui.internal.Workbench$$Lambda$14/859456754.run(Unknown Source) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:151) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590) at org.eclipse.equinox.launcher.Main.run(Main.java:1499) !SUBENTRY 1 org.eclipse.ui.monitoring 1 0 2017-07-20 10:43:42.585 !MESSAGE Sample at 10:43:42.425 (+0,332s) Thread 'main' tid=1 (TIMED_WAITING) !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at org.eclipse.jdt.internal.ui.javaeditor.ASTProvider.getAST(ASTProvider.java:458) at org.eclipse.jdt.ui.SharedASTProvider.getAST(SharedASTProvider.java:128) at org.eclipse.jdt.internal.ui.text.correction.AssistContext.getASTRoot(AssistContext.java:125) at org.eclipse.jdt.internal.ui.text.java.hover.ProblemHover$ProblemInfo.getJavaAnnotationFixes(ProblemHover.java:98) at org.eclipse.jdt.internal.ui.text.java.hover.ProblemHover$ProblemInfo.getCompletionProposals(ProblemHover.java:76) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.deferredCreateContent(AbstractAnnotationHover.java:301) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.setInput(AbstractAnnotationHover.java:188) at org.eclipse.jface.text.AbstractInformationControlManager.internalShowInformationControl(AbstractInformationControlManager.java:1192) at org.eclipse.jface.text.AbstractInformationControlManager.presentInformation(AbstractInformationControlManager.java:1161) at org.eclipse.jface.text.AbstractHoverInformationControlManager.presentInformation(AbstractHoverInformationControlManager.java:894) at org.eclipse.jface.text.TextViewerHoverManager.doPresentInformation(TextViewerHoverManager.java:247) at org.eclipse.jface.text.TextViewerHoverManager$5.run(TextViewerHoverManager.java:237) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:37) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4213) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3820) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1044) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:680) at org.eclipse.ui.internal.Workbench$$Lambda$14/859456754.run(Unknown Source) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:151) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590) at org.eclipse.equinox.launcher.Main.run(Main.java:1499) !ENTRY org.eclipse.ui.monitoring 2 0 2017-07-20 15:06:12.001 !MESSAGE UI freeze of 0,75s at 15:06:11.252 !SUBENTRY 1 org.eclipse.ui.monitoring 1 0 2017-07-20 15:06:12.001 !MESSAGE Sample at 15:06:11.603 (+0,351s) Thread 'main' tid=1 (TIMED_WAITING) !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at org.eclipse.jdt.internal.ui.javaeditor.ASTProvider.getAST(ASTProvider.java:458) at org.eclipse.jdt.ui.SharedASTProvider.getAST(SharedASTProvider.java:128) at org.eclipse.jdt.internal.ui.text.correction.AssistContext.getASTRoot(AssistContext.java:125) at org.eclipse.jdt.internal.ui.text.java.hover.ProblemHover$ProblemInfo.getJavaAnnotationFixes(ProblemHover.java:98) at org.eclipse.jdt.internal.ui.text.java.hover.ProblemHover$ProblemInfo.getCompletionProposals(ProblemHover.java:76) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.deferredCreateContent(AbstractAnnotationHover.java:301) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.setInput(AbstractAnnotationHover.java:188) at org.eclipse.jface.text.AbstractInformationControlManager.internalShowInformationControl(AbstractInformationControlManager.java:1192) at org.eclipse.jface.text.AbstractInformationControlManager.presentInformation(AbstractInformationControlManager.java:1161) at org.eclipse.jface.text.AbstractHoverInformationControlManager.presentInformation(AbstractHoverInformationControlManager.java:894) at org.eclipse.jface.text.TextViewerHoverManager.doPresentInformation(TextViewerHoverManager.java:247) at org.eclipse.jface.text.TextViewerHoverManager$5.run(TextViewerHoverManager.java:237) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:37) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4213) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3820) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1044) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:680) at org.eclipse.ui.internal.Workbench$$Lambda$14/859456754.run(Unknown Source) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:151) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590) at org.eclipse.equinox.launcher.Main.run(Main.java:1499) !SUBENTRY 1 org.eclipse.ui.monitoring 1 0 2017-07-20 15:06:12.001 !MESSAGE Sample at 15:06:11.919 (+0,316s) Thread 'main' tid=1 (TIMED_WAITING) !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at org.eclipse.jdt.internal.ui.javaeditor.ASTProvider.getAST(ASTProvider.java:458) at org.eclipse.jdt.ui.SharedASTProvider.getAST(SharedASTProvider.java:128) at org.eclipse.jdt.internal.ui.text.correction.AssistContext.getASTRoot(AssistContext.java:125) at org.eclipse.jdt.internal.ui.text.java.hover.ProblemHover$ProblemInfo.getJavaAnnotationFixes(ProblemHover.java:98) at org.eclipse.jdt.internal.ui.text.java.hover.ProblemHover$ProblemInfo.getCompletionProposals(ProblemHover.java:76) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.deferredCreateContent(AbstractAnnotationHover.java:301) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.setInput(AbstractAnnotationHover.java:188) at org.eclipse.jface.text.AbstractInformationControlManager.internalShowInformationControl(AbstractInformationControlManager.java:1192) at org.eclipse.jface.text.AbstractInformationControlManager.presentInformation(AbstractInformationControlManager.java:1161) at org.eclipse.jface.text.AbstractHoverInformationControlManager.presentInformation(AbstractHoverInformationControlManager.java:894) at org.eclipse.jface.text.TextViewerHoverManager.doPresentInformation(TextViewerHoverManager.java:247) at org.eclipse.jface.text.TextViewerHoverManager$5.run(TextViewerHoverManager.java:237) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:37) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4213) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3820) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1044) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:680) at org.eclipse.ui.internal.Workbench$$Lambda$14/859456754.run(Unknown Source) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:151) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590) at org.eclipse.equinox.launcher.Main.run(Main.java:1499) !ENTRY org.eclipse.ui.monitoring 2 0 2017-07-20 16:55:57.569 !MESSAGE UI freeze of 1,1s at 16:55:56.423 !SUBENTRY 1 org.eclipse.ui.monitoring 1 0 2017-07-20 16:55:57.569 !MESSAGE Sample at 16:55:56.770 (+0,347s) Thread 'main' tid=1 (TIMED_WAITING) !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at org.eclipse.jdt.internal.ui.javaeditor.ASTProvider.getAST(ASTProvider.java:458) at org.eclipse.jdt.ui.SharedASTProvider.getAST(SharedASTProvider.java:128) at org.eclipse.jdt.internal.ui.text.correction.AssistContext.getASTRoot(AssistContext.java:125) at org.eclipse.jdt.internal.ui.text.java.hover.ProblemHover$ProblemInfo.getJavaAnnotationFixes(ProblemHover.java:98) at org.eclipse.jdt.internal.ui.text.java.hover.ProblemHover$ProblemInfo.getCompletionProposals(ProblemHover.java:76) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.deferredCreateContent(AbstractAnnotationHover.java:301) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.setInput(AbstractAnnotationHover.java:188) at org.eclipse.jface.text.AbstractInformationControlManager.internalShowInformationControl(AbstractInformationControlManager.java:1192) at org.eclipse.jface.text.AbstractInformationControlManager.presentInformation(AbstractInformationControlManager.java:1161) at org.eclipse.jface.text.AbstractHoverInformationControlManager.presentInformation(AbstractHoverInformationControlManager.java:894) at org.eclipse.jface.text.TextViewerHoverManager.doPresentInformation(TextViewerHoverManager.java:247) at org.eclipse.jface.text.TextViewerHoverManager$5.run(TextViewerHoverManager.java:237) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:37) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4213) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3820) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1044) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:680) at org.eclipse.ui.internal.Workbench$$Lambda$14/859456754.run(Unknown Source) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:151) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590) at org.eclipse.equinox.launcher.Main.run(Main.java:1499) !SUBENTRY 1 org.eclipse.ui.monitoring 1 0 2017-07-20 16:55:57.569 !MESSAGE Sample at 16:55:57.098 (+0,328s) Thread 'main' tid=1 (TIMED_WAITING) !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at org.eclipse.jdt.internal.ui.javaeditor.ASTProvider.getAST(ASTProvider.java:458) at org.eclipse.jdt.ui.SharedASTProvider.getAST(SharedASTProvider.java:128) at org.eclipse.jdt.internal.ui.text.correction.AssistContext.getASTRoot(AssistContext.java:125) at org.eclipse.jdt.internal.ui.text.java.hover.ProblemHover$ProblemInfo.getJavaAnnotationFixes(ProblemHover.java:98) at org.eclipse.jdt.internal.ui.text.java.hover.ProblemHover$ProblemInfo.getCompletionProposals(ProblemHover.java:76) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.deferredCreateContent(AbstractAnnotationHover.java:301) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.setInput(AbstractAnnotationHover.java:188) at org.eclipse.jface.text.AbstractInformationControlManager.internalShowInformationControl(AbstractInformationControlManager.java:1192) at org.eclipse.jface.text.AbstractInformationControlManager.presentInformation(AbstractInformationControlManager.java:1161) at org.eclipse.jface.text.AbstractHoverInformationControlManager.presentInformation(AbstractHoverInformationControlManager.java:894) at org.eclipse.jface.text.TextViewerHoverManager.doPresentInformation(TextViewerHoverManager.java:247) at org.eclipse.jface.text.TextViewerHoverManager$5.run(TextViewerHoverManager.java:237) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:37) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4213) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3820) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1044) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:680) at org.eclipse.ui.internal.Workbench$$Lambda$14/859456754.run(Unknown Source) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:151) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590) at org.eclipse.equinox.launcher.Main.run(Main.java:1499) !SUBENTRY 1 org.eclipse.ui.monitoring 1 0 2017-07-20 16:55:57.569 !MESSAGE Sample at 16:55:57.423 (+0,325s) Thread 'main' tid=1 (TIMED_WAITING) !STACK 0 Stack Trace at java.lang.Object.wait(Native Method) at org.eclipse.jdt.internal.ui.javaeditor.ASTProvider.getAST(ASTProvider.java:458) at org.eclipse.jdt.ui.SharedASTProvider.getAST(SharedASTProvider.java:128) at org.eclipse.jdt.internal.ui.text.correction.AssistContext.getASTRoot(AssistContext.java:125) at org.eclipse.jdt.internal.ui.text.java.hover.ProblemHover$ProblemInfo.getJavaAnnotationFixes(ProblemHover.java:98) at org.eclipse.jdt.internal.ui.text.java.hover.ProblemHover$ProblemInfo.getCompletionProposals(ProblemHover.java:76) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.deferredCreateContent(AbstractAnnotationHover.java:301) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.setInput(AbstractAnnotationHover.java:188) at org.eclipse.jface.text.AbstractInformationControlManager.internalShowInformationControl(AbstractInformationControlManager.java:1192) at org.eclipse.jface.text.AbstractInformationControlManager.presentInformation(AbstractInformationControlManager.java:1161) at org.eclipse.jface.text.AbstractHoverInformationControlManager.presentInformation(AbstractHoverInformationControlManager.java:894) at org.eclipse.jface.text.TextViewerHoverManager.doPresentInformation(TextViewerHoverManager.java:247) at org.eclipse.jface.text.TextViewerHoverManager$5.run(TextViewerHoverManager.java:237) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:37) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4213) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3820) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1044) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:680) at org.eclipse.ui.internal.Workbench$$Lambda$14/859456754.run(Unknown Source) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:151) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590) at org.eclipse.equinox.launcher.Main.run(Main.java:1499)
My Eclipse version: eclipse.buildId=4.7.0.I20170612-0950 java.version=1.8.0_91 java.vendor=Oracle Corporation BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=de_DE
Udo, please next time attach the log, not paste it as a comment, it is really hard to read :-) Do you have steps to reproduce? If not, but you still observe the problem, please next time it hangs, create *few* jstack dump files and attach them here.
Ok, I did not know jstack but will use it next time. Thanks.
similar to bug 366048 but seemingly without the pattern of a stack growing an additional frame every 30 seconds?
Hi, I have a same problem. Is any woraround? My threads: --------------------- "Worker-22" #471 prio=5 os_prio=0 tid=0x0000000029b11000 nid=0x3e2c waiting for monitor entry [0x000000005722f000] java.lang.Thread.State: BLOCKED (on object monitor) at org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$PartListenerGroup$3.run(SelectionListenerWithASTManager.java:158) - waiting to lock <0x00000006cc506960> (a java.lang.Object) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56) Locked ownable synchronizers: - None --------------------- locked by: "Worker-18" #81 prio=5 os_prio=0 tid=0x0000000029b0f000 nid=0x724 in Object.wait() [0x00000000411af000] java.lang.Thread.State: TIMED_WAITING (on object monitor) at java.lang.Object.wait(Native Method) at org.eclipse.jdt.internal.ui.javaeditor.ASTProvider.getAST(ASTProvider.java:458) - locked <0x00000006c486b010> (a java.lang.Object) at org.eclipse.jdt.internal.ui.javaeditor.ASTProvider.getAST(ASTProvider.java:471) at org.eclipse.jdt.ui.SharedASTProvider.getAST(SharedASTProvider.java:128) at org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$PartListenerGroup.calculateASTandInform(SelectionListenerWithASTManager.java:173) at org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$PartListenerGroup$3.run(SelectionListenerWithASTManager.java:158) - locked <0x00000006cc506960> (a java.lang.Object) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56) Locked ownable synchronizers: - None
(In reply to Sławomir Cichy from comment #5) > Hi, > > I have a same problem. Is any woraround? > My threads: > --------------------- > "Worker-22" #471 prio=5 os_prio=0 tid=0x0000000029b11000 nid=0x3e2c waiting > for monitor entry [0x000000005722f000] > java.lang.Thread.State: BLOCKED (on object monitor) > at /trunc/ I forgot. My Eclipse: Version: Oxygen.3a Release (4.7.3a) Build id: 20180405-1200
(In reply to Sławomir Cichy from comment #5) The following applies to all users seeing this issue: (In reply to Andrey Loskutov from comment #2) > Do you have steps to reproduce? > If not, but you still observe the problem, please next time it hangs, create > *few* jstack dump files and attach them here.
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.
