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Got his error while task synk jobs were running -- Error Log -- Date: Wed Aug 23 13:47:25 EDT 2006 Message: Failed to execute runnable (java.util.ConcurrentModificationException) Severity: Error Plugin ID: org.eclipse.ui Stack Trace: org.eclipse.swt.SWTException: Failed to execute runnable (java.util.ConcurrentModificationException) at org.eclipse.swt.SWT.error(SWT.java:3374) at org.eclipse.swt.SWT.error(SWT.java:3297) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:126) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3325) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2971) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1914) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1878) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:419) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:95) at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336) at org.eclipse.core.launcher.Main.basicRun(Main.java:280) at org.eclipse.core.launcher.Main.run(Main.java:977) at org.eclipse.core.launcher.Main.main(Main.java:952) Caused by: java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:787) at java.util.HashMap$KeyIterator.next(HashMap.java:823) at org.eclipse.mylar.internal.tasks.ui.views.TaskListContentProvider.getFilteredChildrenFor(TaskListContentProvider.java:219) at org.eclipse.mylar.internal.tasks.ui.views.TaskListContentProvider.getChildren(TaskListContentProvider.java:72) at org.eclipse.jface.viewers.AbstractTreeViewer.getRawChildren(AbstractTreeViewer.java:1157) at org.eclipse.jface.viewers.TreeViewer.getRawChildren(TreeViewer.java:768) at org.eclipse.jface.viewers.AbstractTreeViewer.getFilteredChildren(AbstractTreeViewer.java:565) at org.eclipse.jface.viewers.AbstractTreeViewer.getSortedChildren(AbstractTreeViewer.java:534) at org.eclipse.jface.viewers.AbstractTreeViewer.updateChildren(AbstractTreeViewer.java:2326) at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefreshStruct(AbstractTreeViewer.java:1640) at org.eclipse.jface.viewers.TreeViewer.internalRefreshStruct(TreeViewer.java:955) at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefreshStruct(AbstractTreeViewer.java:1647) at org.eclipse.jface.viewers.TreeViewer.internalRefreshStruct(TreeViewer.java:955) at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefresh(AbstractTreeViewer.java:1616) at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefresh(AbstractTreeViewer.java:1571) at org.eclipse.jface.viewers.StructuredViewer$8.run(StructuredViewer.java:1415) at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1323) at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1413) at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1370) at org.eclipse.ui.dialogs.FilteredTree$2.runInUIThread(FilteredTree.java:280) at org.eclipse.ui.progress.UIJob$1.run(UIJob.java:94) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:123) ... 20 more
I saw this very recently. No noticably bad behavior should result since a refresh is very likely to happen immediately after. Hard to reproduce but happens when modificatoins to the Task List and refresh happen at the same time.
*** Bug 152358 has been marked as a duplicate of this bug. ***
Should be fixed now, but I'm a bit confused as to how this could have occurred given that the code was within a synchronized block around a synchronized list. So leaving open as a reminder for now, please comment if you see this again.
Must be a duplicate of 155712
Yup. *** This bug has been marked as a duplicate of 155712 ***
